iceland tectonic plates tour

Iceland’s Silfra Snorkeling Experience: 15 Important Tips + FAQ

With its beautiful, extremely clear water and bucket-list-worthy status as the only place on the planet where you can swim between two tectonic plates, it’s safe to say that a Silfra snorkeling tour is among the most unique Iceland travel experiences.

From marveling at the magnificent views to knowing what exactly it feels like to snorkel in such icy water, our experience snorkeling in Silfra fissure in Thingvellir National Park is not one that we’ll forget anytime soon.

If you’re planning a trip to Iceland and hoping to experience Silfra fissure for yourself, here’s everything you need to know before you go!

Table of Contents

What’s it like to snorkel Silfra?

Our silfra snorkeling tour, what exactly is silfra, 9 important silfra snorkeling tips, faq about snorkeling silfra in iceland.

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There are two facts that sum up our experience snorkeling between tectonic plates in Iceland: it was extremely beautiful and unique, and it was fairly physically uncomfortable.

The water in Silfra is cold — between 2°C and 4°C, or 35°F and 39°F–year-round.

And, while dry suits and other snorkeling gear can keep you safe, they won’t exactly keep you cozy!

That being said, floating through the water in Silfra, carried gently along by the very calm current, and staring into the depths below was a mesmerizing experience.

We’re very glad we took a Silfra snorkeling tour ( this is the one we booked –more details on that below!), but honestly, when we return to Iceland, it’s probably not an experience we’ll undertake again.

Like other memorable but uncomfortable travel experiences, such as climbing Volcano Acatenango in Guatemala , snorkeling Silfra fissure falls solidly under the category of “once was exactly the right number of times” for us.

We booked this popular tour in order to snorkel Silfra, which included everything from the necessary safety gear, to photos of ourselves snorkeling Silfra, to providing much-needed hot chocolate after we got out of the water.

Most importantly, our tour included an excellent, thorough guide who constantly checked on our comfort and safety every step of the way, from the process of suiting up to the actual Silfra experience to handing our gear back in and warming up after the fact.

Even the souvenir photos came quickly: we had them by the end of the day!

We wouldn’t hesitate to recommend our tour in the slightest for visitors hoping to enjoy a Silfra snorkeling experience.

Book your Silfra snorkeling tour today!

Silfra is a fissure between two of the Earth’s tectonic plates, located in Þingvallavatn Lake in Thingvellir (in Icelandic, Þingvellir) National Park.

In other words, it’s located less than an hour from Reykjavik and right along Iceland’s popular Golden Circle.

The fissure is located between the Eurasian and North American tectonic plates, and is the only place in the world where you can snorkel between tectonic plates!

The water that fills Silfra is melted from Langjökull Glacier (the second-largest glacier in Iceland), and after leaving the glacier, it is filtered through lava rock for 30-100 years before reaching the fissure.

As a result, Silfra is famously home to some of the cleanest and clearest water in the world, with a visibility of about 100 meters at any time!

And, as your tour guide will no doubt tell you, the water is perfectly safe to drink, and you’re more than welcome to take a few sips during your tour.

Be prepared to be uncomfortable.

From standing around for almost an hour putting on piece of gear after piece of gear to being cold in the water, snorkeling Silfra is exciting but not, shall we say, cozy.

I’ll admit, I don’t have much cold tolerance, so I’m a bit biased here–but Jeremy tends to do great in the cold, and by the end of our Silfra snorkeling experience, he was more than ready to be out of the water and warming up.

Is this a reason to skip snorkeling in Thingvellir National Park?

I don’t think so: snorkeling between tectonic plates in Iceland is an incredibly unique experience, and it’s worth the discomfort!

But, as I mentioned above–we don’t plan to go a second time.

Some things are meant to be experienced exactly once in a lifetime!

Book your Silfra snorkeling tour in advance.

As one of the most popular things to do in Iceland, Silfra snorkeling tours book up fast–especially in the popular summer season.

We highly recommend booking your Silfra tour as far in advance as you can if you’re traveling during high season!

Wear the right clothes.

The best clothes to wear to Silfra are thin, warm layers–think thermal underwear like this and wool socks .

I wore these fleece-lined leggings , which offered a bit of much-needed extra warmth.

You want the clothes to be thin, as you’ll layer many things provided by your tour company on top of them, starting with a soft, thermal bodysuit–but start with something warm.

Be sure to also bring layers to put on after you get out of the water.

You’ll want to warm up as soon as possible once you take off your drysuit!

You’ll only be in the water for about half an hour.

You’ll notice that most Silfra snorkeling tours will note that they take 2+ hours to complete–but most of that time is not spent in the water, it’s spent getting ready.

Your guide will need to check each person’s gear, piece by piece, and help ensure that it’s properly fitted. With a bigger group, this takes time!

You’ll also need to walk a short distance to and from the staging area to the metal steps leading into the Silfra fissure.

… But I promise, it’s enough!

The time you spend in Silfra itself is generally plenty for most participants, us included.

The fissure is incredibly beautiful and a literally unique place, but it’s not a particularly varied landscape. Half an hour or so is more than enough to soak it up!

At the end of the fissure, there’s a fairly shallow area where our guide offered to let participants spend another 10 minutes or so snorkeling–and only a couple of people took him up on it.

Most of us were ready to get warm by that point!

You can’t back out.

Once you step flipper-first into the waters of Silfra fissure and let the (very gentle) current start carrying you away, that’s it: you’re committed to snorkeling Silfra.

There’s nowhere to exit the fissure throughout the duration of your tour, as the surrounding area is a protected landscape.

You’ll have a chance to turn around right when you get in the water if you absolutely must, but after that, sit back and relax, because there’s no other option.

Speak up as you’re getting your gear on.

If something is too tight, too loose, or feels generally uncomfortable as you get ready to snorkel Silfra, be sure to say something right then!

Once you’re in the water, it’s too late.

If you want photos of yourself snorkeling Silfra fissure, book a tour that includes them!

You can’t effectively take photos while taking a standard Silfra snorkeling tour–many of the photos in this Silfra blog post are stock photos for that reason–but you can book a tour that includes photos!

We’re so glad that we have photos of our Silfra experience, even if–to be quite honest–the combination of dry suits and neoprene hoods means that we had to look fairly closely at the underwater photos to pick ourselves out in half of them, let alone identifying other people.

Our guide took photos on a GoPro and sent them to us by the end of the day.

It’s a fantastic way to relive what is, for us, most likely a once-in-a-lifetime experience snorkeling in Iceland.

Keep the (lack of) bathroom access in mind.

From the time you start putting on gear until after you’ve completely finished your tour, you won’t have access to a toilet.

This appears to be a common issue, as the guides continually reminded people about it as they checked in for their Silfra snorkeling tours, and strongly encouraged one last bathroom break before starting to get dressed.

In other words, don’t down a few cups of coffee and then immediately head off to Silfra!

Can you visit Silfra as a day trip from Reykjavik?

Yes, you absolutely can!

Silfra is located less than an hour from Reykjavik by car, making it very doable to swim between tectonic plates even if you have very limited time to explore Iceland.

If you’re renting a car in Iceland , you can easily book a snorkeling tour and drive to Silfra yourself (keep in mind that you will need to pay for parking in the national park).

If you’re not renting a car, this popular Golden Circle day trip leaves from Reykjavik and includes a Silfra snorkeling experience, as well as other popular Golden Circle sights like Geysir and Gullfoss!

Book your Silfra day trip from Reykjavik today!

What do you need to bring when snorkeling Silfra?

Beyond the warm, thin clothing we discussed above, you’ll also want to bring additional layers to wear before and after snorkeling, a towel to get rid of any excess water, and maybe some snacks for after you finish.

You’ll need to leave your shoes, any bags, and/or any valuables like your phone in a locked chest with the tour company before walking over to the Silfra entry point.

It’s best to bring as little with you as possible!

What about diving Silfra instead?

For divers with 10 logged dry suit dives or a dry suit certification (or who are willing to spend a couple of days in Silfra to get one), you can also scuba dive Silfra instead of snorkeling it!

While the views look extraordinary, general advice seems to be that, due to the small space that makes up Silfra, the diving experience isn’t extremely different from the snorkeling one.

We felt no desire to spend the time to get dry suit certified in order to experience the same fissure from a deeper vantage point–and quite honestly, as we were snorkeling Silfra, the prospect of diving deeper into the icy water was not exactly appealing.

That being said, if you’re a passionate diver who already has their certification, you may want to book a tour to dive Silfra instead of snorkeling it!

Book your Silfra dive now!

Can you take a Silfra snorkeling tour in winter?

Yes, you can!

Personally, I hate being cold so much that I may or may not agree to take one, but the water in Silfra never freezes, and the tour we took is offered year-round.

Our friend Amanda and her husband took a Silfra snorkeling tour in November, and she loved it (he was reportedly a bit put-off by the cold).

How long is a Silfra snorkeling tour?

Most Silfra snorkeling tours advertise themselves as lasting between 2 hours (without transport) and 4 hours (with transport).

When planning a trip to Iceland, we recommend dedicating half a day to a Silfra snorkeling experience.

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About Kate Storm

In May 2016, I left my suburban life in the USA and became a full-time traveler. Since then, I have visited 50+ countries on 5 continents and lived in Portugal, developing a special love of traveling in Europe (especially Italy) along the way. Today, along with my husband Jeremy and dog Ranger, I’m working toward my eventual goal of splitting my life between Europe and the USA.

14 thoughts on “Iceland’s Silfra Snorkeling Experience: 15 Important Tips + FAQ”

Thank you for the detailed information! I am signed up to do this next week. It says you need to be a strong swimmer. I was wondering what you thought about that. It seems like the dry suit keeps you pretty buoyant. I can swim a little, but for an hour I am not that strong. Wanted to see what you thought!

Thank you so much!

Hmm… honestly this is a tough one because I am a strong swimmer, so take my opinion with a grain of salt!

That being said, the drysuit does keep you very buoyant, and the current keeps you moving. You do need to be comfortable in the water, and the guide will ask you to flip from your stomach onto your back to prove you can get air if needed–but that’s about it as far as the actual swimming goes!

You certainly don’t need to know any specific strokes, be able to go fast, etc–physically, it’s a pretty leisurely activity once you’re in the water.

Hi there! My family and I are traveling to Iceland in June and my mother is very weary of this activity after reading reviews about accidents that have happened when there were leaks in peoples dry suits. We are doing our tour through Adventure Vikings and I was wondering if you felt safe or had any concerns throughout the excursion! I still really want to do it and would love your perspective. Also, is it hard to swim against the current on your way back? Thanks!

My suit did actually have a small leak in it. It wasn’t enough to be concerning or make me feel unsafe, but the front of my shirt was damp when we got out of the water and changed. That alone wouldn’t be enough to stop me from doing the activity again if I wanted to, though!

We felt perfectly safe the whole time, no concerns there. While you’re not allowed to touch the shore due to environmental concerns, you’re never more than a few feet from it during the whole activity.

You also don’t swim back! After floating downstream to the ending point of the Silfra experience, you get out of the water and then walk back to the starting point to get changed. It’s a bit chilly, but you don’t go very far and don’t have to swim. 🙂

This is so helpful–thank you! If I really wanted to just get in and out, could I see how pretty it is from the steps and then bail? I just don’t know that I can do the cold water!!!

Honestly, it’s not nearly as much to look at from above!

If you’d rather not snorkel (which I totally get–it’s not for everyone), I’d recommend just skipping Silfra entirely.

Iceland has far more beautiful places than anyone can see in one lifetime anyway, you won’t be short of options! 🙂

My husband & I went to Iceland @ the beginning of June. This was one of the excursions that I really wanted to do! Your review is very accurate! I just turned 60 for those travelers wondering if it is doable for the older crowd. I didn’t really notice the cold too much. Amazing clarity of the water! I felt I had to swim a little more than just float, especially at the end. Guides were very knowledgeable & attentive! You do have the option of bailing right when you get in the water. I agree – experience of a lifetime, but once was enough! Teresa from OHio

Thanks for sharing, Teresa! Glad you guys enjoyed your once-in-a-lifetime experience. 🙂

Thank you for all this information. I am going with two friends in November. They really want to do this. I am very torn. I hate to miss any great experience but saw that if you have back issues, which I have, it is not recommended. Do you know why? Also, if you bail at the last minute do you get you money back? Lastly, what would happen if someone could not make it back and you are unable to touch the banks? I suppose someone would then tow you? I would hate to be that person! Yikes.

I understand, it’s a hard call!

I’m not a doctor and not sure about the back issues–you may want to ask the company about that. There’s no heavy lifting involved, though the suits are certainly heavier than normal clothes.

No, as far as I know, you won’t get your money back if you bail last minute, as you’ve already taken the spot.

I assume that in the event of not being able to make it to the end that someone would tow you, but I would imagine that’s fairly unlikely!

The current really does most of the work, it’s less swimming and more floating. When you initially get in the water, the guides will run a very quick test making sure that you can comfortably flip yourself over, but that’s about the most exerting part of the process of being in the water.

And, since you’ll exit the water at a different place than where you started, you never have to move against the current.

Hi, I’m wondering if someone has ever done the wetsuit option? How much colder is that? I’m thinking of going in early November, but don’t want to be completely freezing! :O

You definitely wear a wetsuit year-round! The water temperature is fairly consistent throughout the year–it’s only the outside air that changes dramatically (which admittedly can make getting in and out very uncomfortable).

Hi what is the length we have to float/swim to reach the exit point? I am not a strong swimmer, 72 yrs old but heard that the dry suit is bouyant so it helps with the floating/swimming

I’m not sure of the exact distance, but we were in the water for about 30 minutes and you move VERY slowly. More of a drift than anything, with one very brief exception when rounding a corner.

As far as swimming strength, I’d recommend asking one of the tour guides what they think of your skill level before committing to booking. It’s not a challenging experience in the sense that you don’t need any specific strokes, to pull yourself against a strong current, etc, but you do need to be comfortable in the water!

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SNORKELING TOURS

Why Should I Book a Snorkeling tour?

Imagine strapping on your snorkel gear and diving into a world where you're not just swimming but literally drifting between tectonic plates. Welcome to Silfra in Iceland, where snorkeling is not just an adventure; it's a geological marvel in action!

Silfra is the ultimate hotspot for underwater enthusiasts because it sits right on the boundary between the North American and Eurasian tectonic plates. Now, these aren't just any plates; we're talking about the massive puzzle pieces that make up the Earth's crust. And guess what? Silfra is the seam where they're shaking hands, or should we say, bumping underwater elbows.

As you glide through the crystalline waters of Silfra, you're essentially snorkeling in the gap that's pulling North America and Europe apart. It's like being in the Earth's version of a VIP lounge where the guest list is exclusive to those with fins and a sense of awe. The visibility in Silfra is so clear you can practically count the ripples on a fish's tail from meters away. It's like swimming through liquid air – breathtakingly pure and undeniably surreal.

The underwater landscape is a living testament to the slow dance of the tectonic plates. Massive rocks and formations, some resembling underwater sculptures, tell the story of a geological ballet that has been unfolding for centuries. You're not just snorkeling; you're time-traveling through the Earth's history, witnessing the subtle but powerful forces that shape our planet.

Silfra isn't just a dive site; it's a natural wonder that turns every stroke of your fins into a journey through the heart of the Earth. Now, let's talk about our Troll Snorkeling team – the wizards of underwater exploration. These folks don't just guide you; they turn your snorkeling escapade into a memory you'll cherish like the last piece of chocolate in a box. Safety is their middle name (figuratively speaking), and they've got all the snorkeling gear you need. Your only job? Soak it all in and avoid challenging underwater dance moves.

So, if you've ever dreamed of snorkeling between continents, Silfra is the place to make that dream a reality 🌊✨

Snorkeling in Silfra Tours

Activities in Silfra below

🔥HOT SUMMER SALES🔥 15%OFF

Snorkeling in Silfra

Snorkeling on the N.American & Eurasian Tectonic Plates. Free Underwater Photos

Transfer - Snorkeling in Silfra

with Transfer from Reykjavík and Free Underwater Photos

Golden Circle & Snorkel in Silfra

1 Day comfortable guided trip to the Golden Circle, plus snorkeling between the tectonic plates, in crystal-clear glacier water!

Snorkel between tectonic plates, floating in pure glacier water.

Included (in the price)

Get unique underwater photos of you

Prevents Water leaking in. Stay dry at all times

Snorkel suit that gives you extra warmth & comfort

Attach the fins to your feet and move freely in the water

Allows you to breathe and see underwater

Warm and Comforting drink

Replenish your energy with Hraun Chocolate Bar.

Few people on every tour for maximum comfort

Snorkeling in Silfra Tour

Watch the video to learn more about the Snorkeling in Silfra Tour

If you're looking for an amazing experience that will leave you breathless, then Silfra snorkeling is the place for you. Located in the Silfra fissure, this unique spot is known for its crystal-clear waters and stunning scenery. This area of open water between two continents is considered one of Iceland's top natural wonders, and for a good reason! Whether you're an avid diver or just looking to try something different, snorkeling in Silfra is a must for your bucket list. Here's everything you need to know about this beautiful site!

Why should everyone try snorkeling in Silfra?

The incredible biodiversity of Silfra has led to it becoming an important site for scientific research, particularly in ecology. It has been designated as a UNESCO World Heritage Site in recognition of its unique geological features and cultural importance. However, despite its natural beauty and scientific significance, many travelers are still unaware of its existence. This is why it is so important to spread the word about this hidden gem! With that in mind, here are a few reasons why you need to visit Silfra:

It's One of The Most Beautiful Places in the World

Silfra is truly one of nature's marvels, and it's easy to understand why so many people are drawn to the area. The unique rock formations and beautiful colors of the lakes provide a truly surreal experience that is both calming and mesmerizing. Whether you choose to snorkel or scuba dive, you'll feel like you've traveled to a different world while exploring the underwater paradise of Silfra. Best of all, you don't have to travel too far to experience this incredible place - in fact it’s only a short drive from Reykjavik! This makes it perfect for a day trip, so you can explore this fantastic site without committing to a longer trip.

It's So Much More Than Just A Dive Site

In addition to being a popular tourist destination for divers and snorkelers, Silfra also has a number of natural attractions that are perfect for visitors of all ages. There are a number of hiking trails that will take you through the beautiful surrounding countryside, where you can enjoy spectacular views of the lakes. You can also visit the Gullfoss waterfall, which is just a short drive away from Silfra. For those who enjoy fishing, the lake is also an excellent spot for fly fishing. Whether you're looking for adventure or just want to relax in one of the most beautiful places on Earth, Silfra has something for everyone!

It Offers Incredible Views Of The World Beneath Water

One of the main reasons that people choose to visit Silfra is the opportunity to view the world beneath the surface. The clear waters of the lake allow visitors to gaze into the abyss as they swim through the ancient fissure. The water is so clear that you can see more than 100 meters down where the cliffs aren’t in the way. 

It's a Place For Unique Photos And Memories

Another reason that people love visiting Silfra is that it is one of the best places in Iceland to take photos and videos. The water is extremely clear, making it ideal for taking stunning photos beneath the waves. Many people choose to commemorate their trip to Silfra by taking a photo of themselves beside the famous rift - the thin blue water dividing the continent of North America from Europe can be seen in the background of many popular images of the lake. These photographs make wonderful souvenirs that can be treasured for years to come. It's also a great place for selfies!

It's An Ideal Spot For A Day Trip

There are many things you can do while you're visiting Silfra and the surrounding areas. You can spend the day exploring the beautiful countryside or relaxing on the shores of the crystal-clear lake. Both options offer plenty of fun for the whole family and make for an unforgettable vacation. If you'd rather spend your time in the water, you can join one of the guided tours that offer scuba diving and snorkeling experiences for the entire family. The water is around the same temperature for the whole year, around 2-4° C. 

Tröll offers a snorkeling tour between the continents where there are underwater photos included. You get all the equipment and hot cocoa after the snorkel. You can also buy a package with a bus tour from your hotel in Reykjavik to the site. Also, if you love waterfalls, you can also take the Golden Circle package! Explore a part of history and dip in the crystal clear waters while watching and enjoying all the sights below the water's surface. 

My Experience at Silfra, Snorkeling Between Continents in Iceland

TRAVEL GUIDE: SILFRA SNORKELING IN ICELAND

Silfra snorkeling was never even on my “ Iceland Bucket List !”  That changed when I caught a glimpse of the impossibly clear glacial water, flowing from ancient glaciers at Thingvellir National Park.  When I learned you could swim in the fissure between two continents here, I was all in!

Silfra is the only place in the world where you can swim between the tectonic plates !

THEY SAY : The water is so pristine and naturally purified, you can drink it as you swim!

Snorkeling in Iceland is, as you’d probably guess, an icy cold experience!  Despite the discomfort, it’s such a unique, memorable experience that it’s worth the deep freeze.  Plus, it really is fascinating to learn about the history of this natural wonder.

You can’t go on your own to snorkel or dive at Silfra.  You’ll have to book a tour.

If you’re hoping to snorkel at Silfra, you’ll want to rent a car in Iceland.  Driving around is really easy, and it’ll make getting to Thingvellir National Park (and beyond) much easier!

Silfra Snorkeling Tours: Between the Tectonic Plates

There are several tours to choose from in Thingvellir National Park. These are my recommendations:

Silfra Snorkeling Tour

➡️ Click to Book: The Best Silfra Snorkeling Tour

This tour will last about three hours, and cost around $150.

Our guide, Ronan, was a diver with the French Navy. He enthusiastically answered our questions, while guiding us along through the fissure.

Silfra Snorkeling Tour from Reykjavik

➡️ Click to book a snorkeling tour, with a pickup from Reykjavik

This tour company will send a driver to pick you up from Reykjavik. It’s a bit more expensive, at around $170, but worth it if you aren’t renting a car in Iceland.

Silfra Snorkeling + Golden Circle Tour

➡️ Click to book a Golden Circle Tour from Reykjavik

This is a great, longer full-day option! The guide will pick you up in Reykjavik. In addition to snorkeling at Silfra, you’ll get to see the famous Gullfoss waterfall and other sites on the Golden Circle.

What to Expect Snorkeling at Silfra

Your lips are the only part of your body still exposed to the icy glacial water , and (mercifully) they’ll go numb quickly.

Still, I assure you: snorkeling between the tectonic plates is definitely worth it .  It’s one of the most unique, memorable things you can do in Iceland.

If you’re sticking close to Reykjavik, it’s a quick, convenient half-day trip.  If your plans take you around the country on the Ring Road, Silfra makes a great stop on that longer adventure.

Walking around in Thingvellir National Park, the fissure between the continents looks like a deep crevasse between lava rocks, surrounded by beautiful Icelandic scenery.  Once you submerge yourself and peek underwater, the true splendor of Silfra comes to life!

You can snorkel or dive here, in the crystal clear, 37-degree (3-degree Celsius) water .

The visibility seems endless, and they say the glacial water at Silfra is some of the clearest water on the planet.

They also say: the water at Silfra is drinkable, since it’s been “naturally purified” by running through miles of lava rocks before flowing through the fissure.

Swimming Between the Tectonic Plates in Iceland

The tectonic plates separating the continents split here in 1789.  They continue to drift apart by about 2 centimeters per year.

In the best photo you’ll take on your tour, you’ll have one hand on Europe, and another hand on North America!

Is Silfra Snorkeling Dangerous?

With the proper precautions and an experienced guide, snorkeling between the tectonic plates is not dangerous.

The threat of earthquakes isn’t a concern to the guides I spoke to either.

They can remember one time when an earthquake created a silt cloud in the water at Silfra. The tour companies paused operations for a few hours, but the current was strong enough to move the cloudy water out quickly.

They say there’s no real danger from falling rocks or boulders, as the tectonic plates continue to slowly drift apart in Thingvellir National Park .

Hotels Near Silfra

Be prepared to spend half a day snorkeling at Silfra, which is an easy drive from Reykjavik.

There are a few hotel and rental options near the national park, but this interactive map will show you other options in the surrounding region:

Map & Directions to Silfra, Iceland

Silfra is only about 30 miles (or 48 kilometers) from Reykjavik, Iceland.

It’s a pretty drive north on Route 1, known as Iceland’s “Ring Road” to Route 36, which leads you right into Thingvellir National Park.

If you’d rather not drive, you can book a tour which includes a pickup in Reykjavik !

Silfra Snorkeling: What to Expect on a Tour

Here’s a rundown on what to expect, if you go snorkeling between the tectonic p.ates in Iceland.

You have to take a tour. This isn’t something you’re allowed to attempt on your own!

the Water Temperature a Silfra

The temperature of the “clearest water on Earth” is pretty consistently 37.4 degrees Fahrenheit, or 3 degrees Celcius. 

You’ll swear it must be colder than that when it hits your lips!

The Dry suits You’ll Wear

Wear comfortable clothing, which you’ll leave behind after you change into the dry suit the tour operator will provide for you.

The dry suit will definitely keep you warm!  Mine was impenetrable by the icy water (thank God).

That said, this is not a “comfortable” experience!  The drysuits do keep you dry, but the tight cap squishes your head in a way that you’ll have to experience to fully understand.   Your face and lips will still be exposed, and again: the frigid water will have your lips swollen and completely numb after a few minutes of stinging as you swim.

Photos of Snorkeling at Silfra

The guides will typically bring a GoPro or other kind of underwater camera to take photos for you while you swim.

They do a pretty good job, and make sure to get each member of the group several times along the tour.  They emailed us a link to the photos later that same day.

Another challenge surrounding photography at Silfra is: the dry suits are so buoyant, they prevent you from diving under the surface.

The Clarity of the Water at Silfra

Visibility is an incredible 100-meters at Silfra, making it some of the clearest water on the planet.

The water flowing through the fissure is from the Langjokull Glacier , Iceland’s second biggest. The runoff spends around 40 years filtering through lava rocks before arriving at Silfra, so it’s pure enough to drink.

While you won’t see any fish, you’ll be wowed by the hues of blue and the clarity of the water flowing between the continents.

The only living organisms are algae, which thrive during the summer months.

The Best Time to Snorkel at Silfra

Unless there’s a massive storm that prevents you from driving to Thingvellir National Park, snorkeling at Silfra is not weather-dependent.

You can book a Silfra snorkeling tour year-round.

It’s cold regardless of the weather.  It rained pretty steadily during our entire visit, but we barely noticed since we were in the water.

FAQs About Silfra Snorkeling

Let’s tackle a few more frequently-asked-questions people have about snorkeling between the tectonic plates in Iceland.

Is it crowded in the water between the tectonic plates?

According to Iceland tourism officials, around 50,000 people go to Thingvellir National Park each year to swim in the glacial water at Silfra.

Still, you’ll be in a relatively small group, which is allowed to spread out in the water. You won’t be running into other snorkelers very much!

Can You Snorkel on Your Own at Silfra?

Definitely not.  

You’ll have to book a tour to snorkel or dive at Silfra. 

How Long is the Silfra Snorkeling Tour?

The entire tour is about three hours.  Much of it is the introduction, briefing, and drysuit fitting on land.  

Do You Have to Be in Good Shape to Snorkel at Silfra?

A current helps push you along the route down the fissure, so it’s not a tiring swim.  Still, it’s not recommended for travelers who are pregnant, have heat problems, respiratory or neurological diseases.

The tour companies typically don’t allow anyone 70 and older to snorkel at Silfra.  If you’re 60-69, you’ll need a medical waiver.

Can Children Snorkel at Silfra?

Kids 12 and older are allowed on the Silfra tours, but anyone 18 and under has to have an adult with them.

Is it Safe to Snorkel at Silfra?

The snorkeling tours at Silfra continue even when volcanoes erupt and Iceland trembles with seismic activity.

A major safety feature is the buoyancy of the dry suits.  Even if you pass out in the water, someone with you will easily be able to guide you to shore.

Have People Died at Silfra?

Icelandic news agencies report four deaths of people while snorkeling at Silfra since 2010.  An American tourist drowned in 2017. His death was blamed on a heart attack.

Several more have had to be rescued, after suffering from exhaustion, heart attacks, and other medical issues.

Can You Bring Your Own Camera to Silfra?

Technically, you can bring your own camera.  But unless you have a special setup, it’ll be very difficult to use.  The special drysuit gloves you’ll be wearing won’t allow you to operate most normal cameras with underwater housing.  Our guide seemed to manage pretty well with his GoPro.

This is something I’d try to figure out if we ever snorkel at Silfra again.  I’d love to be able to take my own photos, but the drysuit gear is really restricting. 

Can You Dive at Silfra?

Experienced divers are welcome to explore the fissure between the tectonic plates.

Government officials in Iceland estimate 10,000 people go diving at Silfra each year.

How Deep is the Silfra Fissure?

Silfra’s depth goes down 200 feet (60 meters) in certain spots between the tectonic plates. 

If you dive at Silfra, the maximum diving depth allowed is 60 feet, or 18 meters.

Do Fish Live in the Glacial Water at Silfra?

While you won’t see any fish, you’ll be wowed by the color and clarity of the water. The only living organisms are hearty algae, which thrive during the summer months.

Wrap: Is Snorkeling in Iceland Worth It?

There’s so much to see in Iceland, and it’s all unique! Add Silfra to the list of amazing natural wonders not to miss .

While I usually like exploring places on my own (without a guide) I’m glad it’s required here. The guides also help preserve the natural beauty from being overrun by tourists in Iceland’s Thingvellir National Park!

Check out some of our other blogs on Iceland:

🌎 Renting a 4×4 in Iceland

🌎 Hike to Iceland’s Plane Wreckage

🌎 Sky Lagoon : Is it Worth It?

🌎 Iceland’s Diamond Beach

Iceland is open for travel: check volcano updates here

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Snorkeling Tours

Black & Blue - Caving & Snorkeling Tour

Snorkeling & lava caves in iceland at silfra fissure.

Visit an ancient underground lava tube cave where we'll see awe-inspiring rock formations in varied shapes and colors. Afterward, we'll drive to Thingvellir National Park for an afternoon of snorkeling between the Eurasian and American tectonic plates. Snorkeling at Silfra Fissure has been rated one of the top 5 activities in the world by Trip Advisor!

• Silfra Fissure
• Þingvellir (Thingvellir National Park)
• Snorkeling Tour
• Caving Tour
• Free Underwater Photos
• Certified PADI Dive guide / Divemaster
• English Speaking Tour Guide
• An Expert Caving Guide
• All Necessary Snorkeling & Caving Gear
• All Necessary Safety Equipment
• Silfra Admission Fee
• Hot Chocolate & Cookies
• Free Underwater Photos Taken by Your Guide

What to bring

• Warm and waterproof outdoor clothing
• Warm long underwear (fleece/wool)
• Change of clothing

Tour Snapshot

Use Promo Code: GEOFUN Expires: August 15, 2024

Discounts work for any travel time . Apply the promo code in step 2 of the booking process.

• Silfra Snorkeling - Top 5 activity in the world by Trip Advisor!
• Expert Guides
• Small Group Experience
• No Booking Fees
• Free Cancellation

Please select when booking:

• Meet on location
• From Reykjavik

This Iceland snorkeling and caving tour allows you to experience the country from a new angle.

We start a day with the black part of the tour by exploring a lava tube cave close to Reykjavík. We'll head to  Raufarhólshellir , one of Iceland's longest lava tube caves. This adventure gives you great insight into the volcanic activities that have formed the country.

After caving, you will have a chance to grab some lunch between the two activities.

Next, we'll meet you at  Þingvellir National Park (Thingvellir) , where the  Silfra fissure  is found. Here we will  put on our dry suits  and get ready to explore the blue. Witness some of the clearest water on Earth as your guide leads you on a fascinating underwater journey.

Raufarholshellir Cave Tour

Raufarhólshellir is a geological paradise renowned for its stunning minerals. Covered with colorful stalagmites and stalactites, this underground cave shows the fiery side of the land of fire and ice. 

The longest lava cave in Iceland , Raufarhólshellir, spans 1360 meters long. No need to worry about crawling through tight spaces - the ceiling of this vast tunnel reaches 10 meters high. 

Lava tube caves are formed by a flash cooling process of lava that flows deep below the Earth’s surface. Formed over 5000 years ago by the Leitahraun eruption, Raufarhólshellir is an ancient relic of a long-lost volcano.  

During the Raufarholshellir tour, you’ll witness a place where time stands still. Marvel at the main tunnel ceiling where three stunning light beams shine, then continues to three small tunnels decorated with frozen lava. These spectacular rock formations are one of the best sights in Iceland!

Þingvellir National Park (Thingvellir)

Thingvellir is one of Iceland's most famous national parks. It is a UNESCO world heritage site and a historic landmark and geological wonder . Step back in time to the place where the first parliament (Alþingi) took place in 930. Today visitors can still find archeological relics such as the Lögberg or Law Rock and ruins of stone shelters. 

Perhaps its most remarkable feature, the park sits on a rift caused by the separation of two continental plates. The valley has rocky cliffs and fissures, such as the awe-inspiring Silfra fissure, world-renowned as a dive and snorkel site, where we embark on our underwater adventure. 

Silfra Fissure Snorkeling

Snorkeling in Silfra is a rare experience. Located between the Eurasian and North American tectonic plates, it is the only place in the world where you can swim between two continents .

Dubbed the clearest waters on Earth, the visibility at Silfra reaches close to 150 meters for unparalleled views. Stare into the ocean's depths in a way you never have before. 

Your guide will accompany you as you drift through the peaceful waters. You'll soon see why this experience has been called liquid meditation. You'll also explore the underwater geology under these glacial waters. 

Touch lava rocks and observe Iceland from a different angle. This one-of-a-kind adventure requires no previous snorkeling experience and is sure to captivate all ages. Underwater pictures  are taken by our guides during the tour  so it is not necessary to bring a waterproof camera. By the end of our trip, you'll understand why Silfra fissure snorkeling tours were rated as one of the Top 5 activities in the world by TripAdvisor !

Requirements

Participants need to be comfortable in the water and be able to swim. You cannot participate if you are pregnant due to the small risk of cold water entering the suit.

Medical condition : Please fill in the medical statement form in our Snorkeling Handbook before booking the tour. If you have any medical issues, you will need medical approval from a doctor.

Weight limit : 45-120 kg

Height limit : 150 cm -200 cm

Age Limit : 12 years old minimum. Guardian's approval is needed for minors under 18.

What is the best way to prepare for the tour?

All relevant information for the tour can be found in our snorkeling handbook .

Can I bring my camera on my snorkeling tour?

Yes, you can bring a camera, but we recommend to have a waterproof one if you want to have it in the water with you.

Where is the meeting point for the snorkeling tours at Þingvellir?

If you plan to drive and meet us on location, the meeting point is at the Silfra car park, in   Thingvellir National Park .

GPS: 64°15’23.508″N 21°6’58.676″W

Note that the National Park charges a small parking fee of 500 ISK.

We kindly ask you to be at the Silfra car park 15 Minutes prior to your tour starts.

Do you offer photos from the snorkeling tour?

Our guides normally have an underwater camera and usually, take photos during the tour without any fees. If you are interested in photos please let your guide know before you go into the water and after the tour, the guide will provide you the code to the folder which includes all the photos from that day.

Kindly note that photos cannot be guaranteed. Our customers’ safety and well-being are our first priority, and therefore the guide will focus on snorkelers as a priority when in the water and will be taking photos when everyone is comfortable.

Can I wear glasses during the snorkeling?

No. Unfortunately, glasses don’t create a seal between your face and the mask. We recommend wearing contact lenses instead.

I am pregnant, can I participate in the snorkeling tour?

You are not able to participate in the snorkelling tour if you are pregnant.

Do I need to be able to understand and communicate in English in order to participate in the tour?

Yes, the tour is directed in English and therefore you need to be able to understand English to participate.

Can we do snorkeling and diving at the same time?

Some snorkelling tours match with a dive tour, and then you will be in the same area at the same time. You will, however, be in separate groups with separate guides, and won’t be in the water exactly at the same time.

What are the requirements for snorkeling in Silfra?

You need to be more than 12 years old. Participants under the age of 18 must be accompanied by a parent or adult guardian booked on the same tour.

You need to know how to swim independently. Because of the drysuit sizes, there are height-weight limitations. The minimum height is 150 cm, and the minimum weight is 45 kg. The maximum height is 200 cm, and the maximum weight is 120 kg.

All participants must have read and followed directions in the  Snorkeling in Silfra Handbook .

The minimum height is:

• 150 cm   (4’9)

The minimum weight is:

• 45 kg  (99 lbs)

The maximum height is:

• 200 cm   (6’5)

The maximum weight is:

• 120 kg  (265 lbs)

Do I need to know how to swim?

Yes, you must be able to swim independently without a lifejacket, and you must be comfortable in the water.

What is snorkelling in Iceland like?

When snorkelling in Iceland you will be wearing a dry suit, hood and gloves made of neoprene, along with fins, mask and snorkel. This equipment will make it not only possible but also very enjoyable, to stay in the water despite the low temperature. It is a fantastic experience.

Do I need previous experience to snorkel?

No, you don’t need any previous experience to snorkel, but it is important that you can swim independently and that you are comfortable in the water.

What clothing should I wear?

Please wear or bring some long underwear and some warm socks. Wool or fleece is the best material to wear. You will be wearing your long underwear and warm socks under the dry suit.

Will I stay dry in the water?

We provide dry suits so that your body stays dry, and you will also wear undergarments to keep you warm. We use high-quality neoprene dry suits from Waterproof International and O´Three. But it is good to know that there is always a small risk that water can enter the dry suit. This is not dangerous but can feel a little cold, so we recommend you bring a spare set of clothes and a towel, just in case. Kindly note that your hands and face will get wet, which is completely normal and not actually that cold.

What equipment do you provide?

We provide an undergarment and neoprene dry suit from Waterproof and 0’Three. We also provide a neoprene hood and neoprene wet gloves to protect your head and hands from the cold. You will also be given fins, mask and snorkel.

How many snorkelers will be on each tour?

Our client to guide ratio is one guide for every 6 snorkelers.

What is the temperature in Silfra Fissure?

The water temperature is 2-4 degrees C (35-37 degrees F) all year round. The water comes from the Langjökull glacier which keeps it nice and cool, and very refreshing!

What kind of dry suits do you provide?

We use high quality neoprene dry suits from Waterproof International and O´Three.

Where is the location of the snorkeling tour?

The tour takes places at  Silfra Fissure  which is located in Thingvellir National Park .

Are there toilet facilities in Silfra?

Yes, there are 2 toilet facilities at Silfra. However, we don’t recommend that you use them for changing, as it can result in long queues.

Is there any life in Silfra?

Sometimes fish venture into Silfra from Þingvallavatn lake, but they will quickly swim back, as they don’t like chilly glacier waters. However, there is plenty of colorful seaweed, including a bright green variety known as “troll hair”, which makes the fissure unlike anything on the surface.

How deep is Silfra fissure?

The cave systems in Silfra can be up to 60 m deep. However, your dive in Silfra will be from about 7 to 12 m, and the maximum diving depth that is permitted is 18 m.

Related tours

Snorkeling In Silfra Fissure

Golden Circle & Snorkeling

Raufarhólshellir Lava Tunnel Tour

Contact us for more information about this tour.

Arctic Adventures offers pick up service from selected Reykjavík pick up points. Note that you can always update your pick-up / drop-off location through our customer portal: https://my.adventures.is You can press the login button in your confirmation email for an easy login to the customer portal. If you experience an error with logging into the customer portal or can't find your booking, please contact us on Facebook Messenger, or send us a message here below. Chat with us on Facebook Messenger

HIDDEN ICELAND

Come & Find the Best of Iceland

SILFRA DRYSUIT SNORKELING TOUR | MEET ON LOCATION

From 18,990 isk, take your iceland experience to the next level and join adventure vikings to see iceland from the crystal clear waters of silfra. the silfra fissure is one of  the top dive sites in the world,  located inside the unesco world heritage site of þingvellir (thingvellir), which is only about 45 minutes from reykjavik. combining this underwater adventure with your visit to the golden circle of iceland ensures that you really are experiencing the best iceland has to offer., silfra fissure silfra fissure is one of the top dive sites in the world and is located within the unesco world heritage site of þingvellir national park. the 60 metre deep silfra fissure is a result of the north american and eurasian tectonic plates pulling apart, which happens at around 2 centimetres a year. the fissure is filled with crystal clear glacial melt water from one of iceland’s largest glacier, the langjökull glacier. the water inside silfra has been filtered through lava for decades – making the water exceptionally clear and even  drinkable, drysuit snorkelling be protected from the cold water of the fissure as you snorkel in the drysuit, which is constructed from layers of insulating fabric, keeping your body and clothes completely dry. no prior diving or snorkelling experience is needed to join this tour, the only requirement is that you can swim and are confident in water. the buoyancy of the dry suit keeps you on the surface of the water, easily keeping you afloat as you cruise along with the underwater current in the fissure. you will wear your own warm layers (we recommend thermal underwear) underneath the drysuit to make sure that you stay toasty warm all the while enjoying the amazing colours and visibility within the fissure., meet on location please note that this tour is a meet on location so you will need to self drive to þingvellir, silfra car park. here is where you will find the adventure vikings van, along with the other snorkel and dive vans. please park your car at “thingvellir p5” and from here you walk back 400m along the road to where the snorkel and dive vans are located. you should be there 10 minutes before your scheduled tour time to meet your adventure vikings guide. be sure to pay for parking at the p5 parking, by using the parking ticket machines. for gps: 64°15’23.508″n 21°6’58.676″w., get in touch with hidden iceland if you would like to do a private tour including snorkelling..

Operates: All year, 2-3 times a day depending on the season Duration:  2-3 hours Number of people:   Min 1 / Max 6 Minimum age: 14 years old Level of difficulty: Easy to moderate Price: 18,990 ISK ***3,000 ISK discount for bookings less than 24 hours before tour. Included: Drysuit and all other snorkelling equipment, Þingvellir National Park fee, free photos for snorkelling, hot chocolate for snorkelling, English speaking guide

Prerequisites, – have read, accepted and signed the  silfra snorkeling medical statement – also sign the  liability release form when starting the tour – be able to swim and be physically fit – be at least 145cm (4’9) tall / and under 200cm (6’7) tall – be at least 45kg (99 lbs) / and less than 120kg (264 lbs) – be at least 14 years old – not be pregnant – not wear glasses, so if you have a prescription mask, please bring it with you. if not, we advise you to get contact lenses before you join us for snorkelling, what do i need to bring, our partners from adventure vikings provide you with all necessary gear for the snorkelling. however you will need to bring:, – clothes to wear under the drysuit. we recommend long thermal underwear or a sweat suit and warm socks – warm clothes to wear prior and after the snorkelling – towel – food to snack on – underwater camera. if you don’t have an underwater camera you can rent a gopro from adventure vikings for 6,900 isk and you will receive an sd card with your footage to take home straight after your tour..

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• Íslenska

The clearest water on earth, between tectonic plates

Silfra, between the continents, the geology of silfra.

Silfra is a fissure between the North American and Eurasian tectonic plates in Thingvellir National Park . The rift was formed in 1789 by the earthquakes accompanying the divergent movement of the two tectonic plates. The diving and snorkeling site at Silfra is right where the two continents meet and drift apart about 2 cm per year. Silfra is the only place in the world where you can dive or snorkel directly in a crack between two tectonic plates.

The earthquakes of 1789 opened up several fissures in the Thingvellir area, but the Silfra fissure cut into the underground spring filled with glacial meltwater from the nearby Langjökull glacier. The water is filtered through porous underground lava for 30-100 years before reaching the spring that feeds into Silfra. The water is therefore extremely pure by the time it reaches the north end of Thingvellir lake and it allows for underwater visibility of over 100 meters in Silfra. The glacial meltwater remains very cold in Silfra, but as fresh water is constantly filling the fissure, the water never freezes and remains 2°C – 4°C year round. The underwater visibility of the water in Silfra will rarely, if ever, be surpassed. Silfra is said to have the clearest water in the world; feel free to have a sip of this pristine water at any point during your dive or snorkel.

As Silfra is right at the crux between the tectontic plates, it is a very “living” dive site in that it is constantly undergoing changes, both large and small. The fissure widens incrementally, but more drastic changes to the depth profile have occurred during earthquakes in which boulders and rocks fall into the crack. This shifting of the earth creates new tunnels, caverns, and underwater terrain.

On our Diving Silfra Day Tour we offer the PADI Silfra Tectonic Specialty Course , where we dive deeper into the geology of Silfra.

How to experience Silfra with us

Snorkeling Silfra Tour

#3 on the best of the best awards on tripadvisor 2023.

Diving Silfra Tour - Meet on location

The dive between the continents.

Hot and Cold Snorkeling and Spa tour

The perfect golden circle self-drive combo.

Private Snorkeling Silfra Tour

Skip the line and go on your own time, sections of silfra.

The Silfra rift occupies in total a relatively small surface area, approximately 600 by 200 meters. Walking from the parking lot to Silfra will lead you past a pool of water prior to the Silfra entrance. Hidden from view is a cave that extends from this pool of water to great depths—63 meters at least. Diving in all cave and overhead environments is strictly prohibited in Silfra and the Silfra cave is an especially dangerous for diving due to its narrow passages and instability. At the other end of the pool, a tunnel links this body of water with Silfra. This tunnel is known as “the toilet” due to the strong current that flushes divers down the swim-through. Diving through this tunnel is also now prohibited.

The main part of Silfra has been divided into four main sections: Silfra Big Crack, Silfra Hall, Silfra Cathedral, and Silfra Lagoon. The first three sections are deep, expansive canyons, sometimes extending down into dark and uncharted cave systems. This series of impressively deep cracks in the earth is followed by a shallow lagoon with fields of algae. Here divers and snorkelers can see across the entire span of the lagoon, about 100 meters. We plan our dives and snorkel swims so that we are able to see all the parts of Silfra in every  Diving Silfra Day Tour and Silfra Snorkeling Tour . Silfra is at some points very deep (cave systems can descend to approximately 60 meters). If you are diving, the maximum allowed depth of your dive in Silfra will be 18 meters, and the average depth of the dive is between 7 and 12 meters.

Life in Silfra

Although Thingvellir Lake has an abundance of fish species and trout fishing is very popular in the lake, the fish usually do not venture far into the Silfra fissure. The marine life in Silfra consists mostly of bright green “troll hair” and different types of algae that provide a colorscape unlike anything that occurs naturally above the surface.

History of Diving in Silfra

Diving in Silfra began in 1966. A teacher at the Stýrimannaskóli (“Seafaring School”) in Reykjavík, Þröstur Sigtryggson, had just returned to Iceland from the United States where he had learned to dive. Þröstur advertised a beginner’s diving course and a small group of interested individuals gathered to learn this new sport. After completing their course, this group went to dive in Silfra and the surrounding fissures at Thingvallavatn. Níkúlás Halldórsson, one of these first divers, says they were drawn to Silfra for the same reasons as we are today—they thought it was beautiful and clear. All of the original divers wore wet suits, as dry suits were unheard of for recreational divers at the time.

Tómas Knútsson, the founder of DIVE.IS, first dived in Silfra in 1976. Like the original Silfra divers, Tómas used a wetsuit when diving in Iceland. He switched to a dry suit in 1989, when he started to dive year round in Silfra and elsewhere in Iceland. Silfra began to gain international recognition as a dive site through Tómas’s efforts in the 1990s and 2000s.

Location & Facilities

Silfra is located in Thingvellir National Park, about an hour’s drive from Reykjavík. Silfra is easily accessible in the park via both paved and gravel roads. The parking lot directly adjacent to Silfra is reserved for use by commercial vehicles only. A metered parking lot (P5) just down the road is available to participants on the Silfra snorkeling and diving tours . Thingvellir National Park has an Information Center at the junction between road 36 (the main road from Reykjavík) and road 361 (the road turning into the park). The Information Center has a café, shop, and restrooms. Outdoor toilets are also available at Silfra. If you are coming on tour with us we will meet you at the Silfra meeting point .

Silfra and Thingvellir National Park is located on the Golden circle , a very popular sightseeing route in Iceland. Other sightseeing locations on the Golden circle are Gullfoss waterfall, Geysir hot spring and Kerið crater.

The entrance to Silfra is about a 100 meter walk from the Silfra parking lot. Snorkelers and divers enter Silfra by descending a metal staircase, which ends in a submerged platform. The submerged platform allows for divers to do their final buddy checks and for snorkelers to adjust to how the dry suit changes when immersed in a water environment. A metal exit platform at the end of Silfra in the Lagoon provides an easy exit procedure for divers and snorkelers, as well as protecting the fragile terrain from disturbance. Exiting Silfra at points other than the entry and exit platforms is not allowed, except in the case of an emergency. The walk back to the parking lot from the exit platform is about 400 meters.

Thingvellir National Park

Thingvellir National Park has been declared a UNESCO WORLD HERITAGE SITE both for its cultural and historical significance as well as natural and geological uniqueness. The park surrounds part of Iceland’s largest lake, Thingvallavatn. The area lies directly on the mid-Atlantic ridge, where the North American and Eurasian tectonic plates are slowly diverging. Continental drift created fissures that are now submerged, such as Silfra and the nearby Davíðsgjá , as well as enormous rifts and canyons above water.

From 930 AD until 1798, Thingvellir was the assembly site for the national parliament of Iceland, the Althing, from which Thingvellir derives its name. The assembly was a forum to recite the laws and make amendments, to resolve conflicts and feuds, and to make trade and marriage arrangements. It is thought that speakers at the assembly made use of the acoustics of canyon walls to help their voice carry further.

If you have friends or family accompanying you on your tour who do not wish to get into the water themselves, the area around Silfra is full of lovely walking trails that lead through this fascinating place. You can check out our Silfra Blog, where we have gathered together a few things to do around Silfra .

Video about Silfra

A silfra dive in moving images, text and music, rules and regulations.

As Silfra is located in Thingvellir National Park, the snorkeling and diving activities are subject to rules and regulations set by the national park authorities. The national park authorities stipulate that

• all divers must have at minimum Open Water diving certification from an internationally recognized diving organization. Open Water certification means that a diver is certified to dive to 18 meters without the direct supervision of an instructor.
• all divers in Silfra must be certified in dry suit diving by an internationally recognized diving organization. In lieu of this, divers may present proof of a minimum of 10 logged dry suit dives within 2 years of the planned dive at Silfra. These logged dry suit dives must be signed off by an instructor from an internationally recognized diving organization.
• all divers must be at minimum 17 years of age.
• diving in caves and any overhead environment is strictly prohibited.
• the maximum allowed depth of diving is 18 meters.
• the ratio of divers to guide shall not exceed 3 to 1.
• the ratio of snorkelers to guide shall not exceed 6 to 1.
• SCUBA diving in a wetsuit is not allowed.
• tour operators shall screen participants for swimming ability and medical fitness for the activity.
• each snorkeler and diver must pay a fee of 1,500 ISK to Thingvellir National Park.

Frequently asked questions about Silfra

Yes, there are toilet facilities at Silfra . However we kindly ask you to not use them for changing, as there are only 2 toilets at Silfra and it can cause long queues to form. We do have a changing room vehicle , and often several other cars at Silfra for participants to change clothes in. Due to this layout, we highly recommend that participants arrive at Silfra already wearing their thermal base layer.

Unfortunately, there is no food sold directly at Silfra . There is however a restaurant at the Thingvellir Information Centre which is located just 3,5km away from Silfra.

The Þingvellir National Park charges a parking fee, which allows you to park in any of the five car parks in the park for the duration of the day. Please note that the parking lot for divers and snorkelers at Silfra is called P5 and is about a 5-minute walk to the Silfra meeting point. You can pay for parking on CheckIt before or during the day of the visit, and enter the license plate of your car into the system. Cameras check all license plates entering and leaving the parking lots. If you can’t pay online, you can pay at the Visitor center. Pay machines will also be installed at the parking lots in the near future. The pay machines accept all major credit/debit cards.

Although there is plenty of life in Silfra, most of it is either plant life or micro-invertebrates, which are not visible to the human eye. Silfra is home to a unique amphipod called Crymostygius Thingvallensis found only in Thingvellir Lake and the surrounding fissures, such as Silfra. In regard to fish life, there are three different species of fish that live in the lake: Brown Trout, Arctic Char and Sticklebacks, however, only the Arctic Char visit the fissure; they are frequent visitors during mating season in August and September. Throughout the rest of the year, the only fish who live in the Silfra fissure are the Dwarf Char, a subspecies of the Arctic Char. These range in size from a few centimeters to approximately 10cm maximum and live down in the darker recesses near the rocks and as such are not often spotted by divers or snorkelers.

The water temperature in Silfra is 2-4°Celsius all year around. This converts to 35-39°Fahrenheit.

The maximum allowed dive depth in Silfra is 18 meters / 60 feet, however the average depth of a typical Silfra dive is about 10 meters / 32 feet. Depending on the dive qualifications and dive experience of the divers, the Silfra dive might be shallower for safety and convenience.

It is about 60 km from Reykjavik to Silfra and it takes a little less than one hour to drive the distance by car, given the weather conditions are good. If you choose to drive to Silfra yourself and don‘t know the way, we recommend you to study the map before you hit the road. Silfra is located in Þingvellir National Park , which is a bit different from other national parks. At a point, when you turn into road 36, you will feel like you are driving into the middle of nowhere. Please do not turn around, just keep going straight until you see our company cars which are parked at the Silfra Meeting Point, you then drive a little further to parking lot P5 to park. If at anytime you feel lost please do not hesitate to call our office for help.

Each of the Silfra dives is usually between 30 and 45 minutes, depending on air consumption, diver ability and customer comfort.

Silfra is located in Thingvellir National Park, one of the main sites of the Golden Circle. It is a stunningly beautiful area, as well as being one of Iceland's most important historical sites. There are many walking trails around the park and close by Silfra, and many of the areas have information signs telling you about the historical & geological aspects of the area around Silfra and Thingvellir.

There is no best or worst time to dive Silfra. Every season and every weather has its advantages. A calm and overcast winter day will be amazing with beautiful reflections in Silfra´s water surface. A windy summer day with waves will cast sun ripples onto the Silfra bottom... a sight you will never forget. Generally in the summer, there are more snorkelers & divers at Silfra, so the winters are calmer, but winter surface conditions can also be more challenging with regard to weather and cold.

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[email protected]

Diving in Silfra Iceland | Tectonic Plates

No booking fee, best price guarantee, free cancellation, secure payments, fully licensed local tour operators, information.

• Scuba Dive in one of the clearest waters in the world
• Silfra fissure
• Thingvellir National Park
• Scuba Dive between tectonic plates

Embark on our Scuba Diving Silfra Tour and plunge into the world’s most extraordinary aquatic wonder. Explore Silfra , a mesmerizing crack in the Earth formed by the shifting North American and Eurasian tectonic plates. Immerse yourself in the unparalleled clarity of glacial water, revealing over 100 meters of captivating underwater visibility. This otherworldly experience, shaped by filtered water flowing through ancient lava rocks, unveils a unique underwater panorama found nowhere else on our planet.

This is a meet on location tour, but it is also possible to book it with a pick up from Reykjavik. 

Timeline of the tour

• If you have chosen a tour with pick-up, meet your driver at the designated location in Reykjavik.
• Arrive at the Silfra meeting point 15 minutes before the tour start time and check-in with the guides.
• Group division: Each guide will lead a group of 3 people.
• Receive a comprehensive briefing and gear up with your assigned guide (approximately 1 hour).
• Once fully dressed, your guide will obtain a number from the park ranger, which will be your group’s identifier for entering the water.
• Proceed to the entry platform and await your turn (wait time may vary).
• Have your weight checked before entering the water.
• Spend around 30-45 minutes exploring the underwater wonders.
• Exit the water via the platform and return to the meeting point by walking approximately 250 meters.
• Remove your equipment and savor hot chocolate and cookies to warm up.
• Utilize this time to converse with your guide, address any queries, and view the photos captured during the tour.

How to get to your Scuba Dive Silfra Tour?

This tour is a meet on location tour, which means that you will meet us at the Silfra meeting point .

It is also possible to join us on the Silfra Diving Tour from Reykjavik. On that tour, we provide convenient pick-up service from your Reykjavík accommodation, allowing you to relax and enjoy the one-hour scenic drive to Thingvellir National Park . En route, our knowledgeable guide will share captivating insights into the geological wonders of Silfra and the rich cultural history of the surrounding area. 

Scuba Diving tectonic plates in Iceland

Experience the Silfra Diving Tour, featuring an exhilarating dive lasting approximately 30-40 minutes, reaching a maximum depth of 18 meters. Upon arrival at the Silfra Meeting Point, your guide will provide a comprehensive briefing about the dive site and assist you in preparing the dive equipment. Rest assured, we utilize top-notch SCUBA gear from reputable brands like BARE, Aqualung, APEX, and Aqualung regulators for your utmost safety and comfort.

Please note that all participants joining this extraordinary adventure must possess either dry suit diving certification or have logged a minimum of 10 dry suit dives within the past two years. Confirmation of this prerequisite must be supported by written proof from a certified diving instructor.

Prepare yourself for an unforgettable moment as you dive into the untainted and translucent waters of Silfra. Delicately filtered for countless years by Iceland’s volcanic basaltic rock, this remarkable body of water offers an unparalleled purity that even allows for a refreshing sip during your dive. Discover an oasis of pristine clarity where you’ll encounter some of the purest drinking water imaginable.

The four main parts when Scuba Diving in Silfra

Embark on an extraordinary journey through the various sections of Silfra during your scuba diving adventure. Begin by floating through the narrowest part known as Big Crack, where you can capture an iconic ‘Dive Between the Continents’ photo. As you continue, Silfra Hall awaits, offering a chance to spot local ducks and geese paddling above you in this widening fissure.

Next, venture into the awe-inspiring Silfra Cathedral, the deepest point of our remarkable diving tour. Marvel at the mesmerizing ‘chandelier effects’ created by rising bubbles from other divers, if present. Finally, conclude your dive in the serene expanse of Silfra Lagoon, where endless visibility surrounds you.

After the dive, we’ll return along a 250-meter path with our dive gear before indulging in hot chocolate and cookies to warm our hands and spirits. If you require assistance with your gear on the way back, kindly inform your guide.

For friends or family members who are not certified divers but wish to experience Silfra, they are welcome to join our Snorkeling Silfra Day Tour.

Please note that each guide in Silfra accompanies a maximum of three divers. In the event that three couples are diving together (with two guides), one couple may need to be split up, regrettably not being able to enjoy Silfra together. Please consider this before making your booking.

Enhance your Silfra Diving Tour experience by reserving Extras & Souvenirs in advance! Discover a range of captivating Souvenirs available for purchase during the booking process under the “Extras” section. If you don’t find the specific Souvenir you desire, simply reach out to us or leave a message in the comment box while making your booking, and we’ll make sure to bring it along on your Silfra Diving Tour.

Additionally, consider adding the Silfra Tectonic Specialty Course to your Silfra Diving Tour by selecting it from the “Extras” options. Expand your knowledge and diving skills with this exciting specialty course.

• 1 guided dive between the tectonic plates in Iceland.
• Dive instructor
• All necessary dive equipment
• Entrance fee into Silfra
• Hot chocolate and cookies after the dive

What to bring

• Your Scuba dive certification card (PADI Open Diver Water or equivalent)
• Proof of dry suit dive certification or 10 logged dry suit dives within two years of tour date
• Long underwear
• Thick socks
• Suitable clothes for the weather of the day

Good to know

• This tour is operated all year. The temperature of the water is the same all year round.
• The temperature of the water is approximately 4°C.
• There is a maximum of 3 divers per 1 diver guide.
• You can also book this as a private tour. Please contact us for more booking. 
• Enhance your Silfra Diving Tour experience by reserving Extras & Souvenirs in advance! Discover a range of captivating Souvenirs available for purchase during the booking process under the “Extras” section.
• Additionally, consider adding the Silfra Tectonic Specialty Course to your Silfra Diving Tour by selecting it from the “Extras” options. Expand your knowledge and diving skills with this exciting specialty course.  

Safety Requirements

Participants must: 

• be a certified diver at the level of PADI Open Water Diver or equivalent
• Have dry suit diving certification OR have at least 10 logged dry suit dives within two years of the Silfra tour date and be able to provide written proof from a diving instructor of these dry suit dives  PDF
• have read, signed, and followed directions on the online Diving Silfra Medical Statement (link provided in confirmation email)  PDF
• have our Diving Medical form signed off by a doctor if they are age 60 or older  PDF
• sign our liability release form at the start of the Silfra dive tour  PDF
• be at minimum 150cm / maximum 200cm
• be at minimum 45kg / maximum 120kg
• fit within our dry suit size chart  PDF
• be at least 17 years of age (signature of legal guardian required for under 18 year old participants)
• be physically fit
• be able to communicate in English
• be ready to wear a sometimes tight & constricting dry suit
• not be pregnant

Meeting Point

Walking route from the Parking lot to the Meeting Point

Our experienced dive guides typically carry an underwater camera during dives in Silfra and other dive sites, aiming to capture memorable underwater photographs. However, safety is always the top priority, and there are situations where the dive guide may choose not to divert attention from ensuring dive safety. This may occur during challenging conditions or when diving with less experienced individuals, resulting in fewer or no photos being taken. We kindly request your understanding in such circumstances.

Usually, the dive tour photos are available for purchase after the dive. For more information, please visit our Souvenir page.

The duration of each Silfra dive typically ranges from 30 to 45 minutes, taking into account factors such as air consumption, diver proficiency, and customer comfort.

The duration of the Silfra Diving Day Tour can vary depending on the number of participants and their diving experience. While we cannot provide an exact time, the tour typically lasts around three hours at Silfra, including one dive. If you plan on doing two dives, please allocate a maximum of five hours for the Diving Silfra Tour. If you utilize our transportation service, the estimated total time for your Silfra Diving Day Tour, from pick-up to drop-off, is a maximum of five hours, encompassing one dive.

For the safety and well-being of all participants, every diver joining our Silfra Diving Day Tour is required to complete the Diving Silfra Medical Statement. This form includes a comprehensive list of the difficulties and risks associated with the Silfra dives on the left-hand side, and a medical questionnaire on the right-hand side. By filling out the medical questionnaire, participants confirm their fitness and good health to participate in the Silfra Diving Day Tour. This process ensures that all divers can enjoy a dive tour that is both safe and enjoyable.

Certainly! You are more than welcome to bring your own dive equipment to Iceland. It is important to ensure that your gear is properly serviced and suitable for cold water diving. We typically use DIN cylinders as a standard, but if you require a different setup for your dive equipment, kindly inform us in advance, and we will make every effort to accommodate your request.

Please be aware that we do not offer any discounts on self-provided equipment, and Dive.is does not assume any responsibility for the equipment you bring on the tour.

Certainly! You are welcome to capture your own photos or videos during the tour. However, we kindly request that you secure your equipment to your body, such as with a wrist band, to ensure its safety. We do not recommend using a waterproof case for your phone as operating it with gloves can be challenging. It is essential to carefully review the instructions provided with your photography equipment regarding its depth and cold water limitations, and we strongly urge you to adhere to them diligently. Please note that we do not assume any responsibility for any lost or damaged photography gear that may occur during the tour.

If you hold a PADI or SSI certification, we can often search for your information online. Prior to the tour, we will require your full name (including middle name) and birth date, as they appear on your certification card. It’s important to note that both PADI and SSI occasionally experience website or data input issues, which may result in your records not being accessible. Unfortunately, we are unable to look up certifications from other organizations. In either case, if we cannot find your certification, you will not be able to participate in the tour. Therefore, it is recommended to always carry your dive cards or opt for PADI e-cards, which can be stored on a mobile app. If you have recently been certified, the temporary card emailed to you by your instructor will serve as acceptable proof.

To dive in Silfra you need dry suit certification OR a minimum of 10 logged dry suit dives within the last two years. You don’t need to meet both of these requirements, one is sufficient.

There is no definitive “best” or “worst” time to dive Silfra as each season and weather condition presents its unique advantages. Winter days with calm and overcast weather offer breathtaking reflections on Silfra’s water surface. On the other hand, windy summer days with waves create mesmerizing sun ripples on the Silfra bottom, leaving an unforgettable sight. During summer, there tend to be more snorkelers and divers at Silfra, making winter a quieter season. However, it’s important to note that winter surface conditions can be more challenging due to weather and cold temperatures.

From ISK 34,990

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Snorkeling Tours

Silfra Fissure Snorkeling Day Tour

Swim in the gap between europe and north america.

Meet our guides

Journey to the heart of Thingvellir National Park to take the most incredible dive of your life: you will be snorkeling inside The Silfra Fissure, one of the most amazing places in the world. The Silfra Fissure was named one of the Top 5 activities in the world by TripAdvisor.

• Snorkeling Between the Tectonic Plates
• Þingvellir National Park (Thingvellir)
• Silfra Fissure
• Free Underwater Photos
• High Quality Dry Suits
• Warm and Cosy Undergarment
• Certified PADI Diveguide / Divemaster
• All necessary snorkeling gear
• Hot chocolate and cookies
• Thingvellir Silfra entrance fee (1500 ISK)
• Certified Dive Master guide

What to bring

• Fleece or wool underclothing and socks
• Waterproof camera
• Extra set of clothes

Tour Snapshot

• Expert Guides
• Small Group Experience
• No Booking Fees
• Free Cancellation

Please Select When Booking:

• Meet on location
• From Reykjavik

Classic Tour From Thingvellir

Classic Tour From Reykjavik

• Snorkeling Silfra Guide

Silfra is a rift in the Earth between two tectonic plates. Swim in the gap between Europe and North America in crystal-clear water.

You will experience a truly breathtaking experience as you drift peacefully through the electric blue waters of the Silfra Fissure. The water is astonishingly clear because it is glacial water from the Langjökull Glacier.

All year-round, the temperature in Silfra is about 2-4 degrees, but don’t worry! We provide fully insulated dry suits, and there will be a certified expert with you at all times. The water in Silfra is as pure as water can get: meaning that you can drink it during the dive!

SNORKELING IN SILFRA FISSURE

Silfra is located in the heart of the historic Thingvellir National Park, a UNESCO World Heritage Site . The fissure opened after a strong earthquake in 1789. The North American and Eurasian tectonic plates continue to move farther apart at a rate of about 0.79 in (2 cm) every year.

To get to Silfra for your snorkeling trip, you can choose a pick-up from your selected location in Reykjavik. You may also choose to meet us on location at Thingvellir, where our friendly guides will be waiting for you.

The best part is that you don’t need any certification or previous snorkeling experience. The only requirements are that you’re healthy, adventurous, and able to swim!

Once you’re at Silfra, you’ll be given all the necessary equipment and put on your drysuit. You’ll swim in the “lazy current,” a stream of glacial water that flows slowly in the fissure. The pure glacial water filling the rift has been filtered by lava rock for decades, so feel free to take a sip of water while you’re there!

Marvel at the contrast between the deep blue water shades with the lime green and orange seaweed along with the dark brown rocks. You’ll discover spectacular rock formations as you glide through the four sections of Silfra:

• Silfra Big Crack is the narrowest section, 394-feet (120 m) long, where the tectonic plates are incredibly close to each other.
• Silfra Hall is 26-ft (8 m) wide and 46-ft (14 m) deep, with more light and massive rocks on the bottom.
• Silfra Cathedral is 328-ft (100 m) long and 75-ft (23 m) deep, where swimming feels like flying.
• Silfra Lagoon is the 16-ft (5 m) deep section with the best visibility and bright green algae.

When you finish snorkeling, you’ll be welcomed at the surface with cocoa and cookies to warm you up as you enjoy the panorama of Thingvellir. One more reason to add this experience to your bucket list!

Prerequisites

Important note : Participants need to be comfortable in the water and be able to swim. You cannot participate if you are pregnant due to the small risk of cold water entering the suit.

Weight limit : 45-120 kg

Height limit : 150 cm -200 cm

Age Limit : 12 years old minimum. Participants under 18 must be accompanied by a parent or adult guardian booked on the same tour.

English : It is important that you can both understand and communicate in English to participate in the tour.

Please check our snorkeling handbook for more information about the tour.

Meeting location

If you plan to meet us at Silfra, please come to the Silfra car park at Thingvellir National park. Then once you have parked, walk about 400 m back up the road until you reach a smaller car park containing all the snorkel and dive vans. Once you have got there, then you can look for your guide. Please make sure that you arrive at Silfra car park early enough to meet your guide 15 minutes before the tour starts. Trust us, seeing the icy blue waters of Silfra is definitely worth it!

GPS to meeting location : 64°15’23.508″N 21°6’58.676″W

Pick-Up Information

• You can choose to be picked up from Reykjavik at 9 a.m. from your hotel or a nearby meeting point. You can find the list of available pick-up points in Reykjavik on our information page. Please be aware that picking everyone up can take up to 30 minutes, so your patience is greatly appreciated. 
• If you plan to drive and meet us on location, the meeting point is at the Silfra car park in Thingvellir National Park. GPS: 64°15’23.508″N 21°6’58.676″W. Note that the National Park charges a small parking fee of 500 ISK (3.98 USD).

Can you wear glasses?

You won’t be able to wear glasses underneath your snorkeling mask while you are in the water. So if you need glasses, we recommend that you make alternative arrangements: either acquiring a prescription mask or using contact lenses for the tour.

Practical Information

• Please read and fill in the medical statement form in our Snorkeling Handbook before booking the tour. If you have any medical issues, you will need to get medical approval from a doctor.
• Participants must be 12 years or older. Participants under 18 years old need approval from a parent or legal guardian. 
• The weight limit for the participants: 99-264 lbs (45-120kg). The height limit for the participants: 59-78 in (150 - 200cm). 
• All participants must be able to swim.
• You cannot participate if you are pregnant due to the small risk of cold water entering the suit.

Please Note

• This tour sells out frequently. We recommend booking this tour well in advance.
• You cannot wear glasses underneath the snorkeling mask. Please wear contact lenses or bring your own mask with the prescription.
• All snorkeling trips undertaken are the responsibility of its participants. Adventures.com does not assume any responsibility for accidents caused by its customers or can be traced to their own actions. Participants have to sign a waiver stating that they realize that outdoor activities carry an inherent risk.

I am an instructor from the Czech Republic, I have been working and diving in various places around the world for the past 6 years. But now I have decided to stay and explore Iceland. it's a wonderful place with lots of activities to try. You will always find me with a big smile ready and waiting to dive into the water with you!

Kris is our hard-core dive instructor from Hungary, he loves the winter and extreme diving and snorkeling in the wind, snow and ice. He not only loves diving, but also skiing and winter sports. To add to his diving experience, he used to work as a life guard for many years, so you can feel absolutely safe with him.

Passionate for any water activity, I worked over and under the most beautiful waters of Europe and Asia for the last 15 years as diving and sailing instructor, boat captain and tour manager. Always looking for the next skill to learn you will find me ready to guide you safely through your next adventure.

Scuba INSTRUCTOR from Slovenia, with experience diving and teaching all around the world, always with a smile and passion for his work. He is incredibly helpful and fun and will make your tour an unforgettable experience.

How should I prepare myself for the tour?

All relevant information for the tour can be found in our snorkeling handbook .

Am I allowed to bring my camera on my snorkeling tour?

Yes, you are allowed to bring your camera along, but we recommend to have a waterproof one if you want to have it in the water with you.

Where is the meeting point at Þingvellir for the snorkeling tour?

If you are planning on meeting us at the location than the meeting point is at the Silfra car park, in Thingvellir National Park .

GPS: 64°15’23.508″N 21°6’58.676″W Please note that the National Park charges a small parking fee of 500 ISK. We kindly ask you to be at the Silfra car park at least 15 minutes prior to your tour starts,

Do you take photos on the snorkeling tour?

Our guides normally have an underwater camera and usually, take photos during the tour without any fees. If you are interested in photos please let your guide know before you go into the water and after the tour, the guide will provide you the code to the folder which includes all the photos from that day.

Kindly note that photos cannot be guaranteed. Our customers’ safety and well-being are our first priority, and therefore the guide will focus on snorkelers as a priority when in the water and will be taking photos when everyone is comfortable.

Can I wear glasses during the snorkeling tour?

Unfortunately, you cannot wear glasses as the glasses don’t create a seal between your face and the mask. We recommend wearing contact lenses instead.

Am I allowed to snorkel if I am pregnant?

You are not allowed to participate in our snorkeling tour if you are pregnant as it can put your baby in high risk.

Do I have to understand and communicate in English in order to participant in the tour?

Yes, you must be able to understand English to a participant. The tour is directed in English.

Can I do snorkeling and diving at the same time?

Some snorkeling tours match with a dive tour, and then you will be in the same area at the same time. You will, however, be in separate groups with separate guides, and won’t be in the water exactly at the same time.

What are the requirements for snorkeling in Silfra?

You need to be more than 12 years old ( guardian’s approval needed for minors under 18) and you need to know how to swim independently. Because of the dry suit sizes, there are height-weight limitations. The minimum height is 150 cm, and the minimum weight is 45 kg. The maximum height is 200 cm, and the maximum weight is 120 kg.

The minimum height is: 150 cm (4’9)

The minimum weight is: 45 kg (99 lbs) ------------------------------------------------, the maximum height is: 200 cm (6’5), the maximum weight is: 120 kg (265 lbs), do i need to know how to swim to take part in the snorkeling tour.

Yes, you must be able to swim independently without a lifejacket and feel comfortable in the water to take part in the tour.

What is snorkeling like in Iceland?

It is a magical experience. When snorkeling you will be wearing a dry suit, hood, and gloves made of neoprene, along with fins, mask, and snorkel. This equipment will make it not only possible but as well very enjoyable to stay in the water despite the cold temperature. Tripadvisor recently rated Snorkeling at Silfra as one of the Top 5 travel experiences in the world. 

Do I need to have experience to snorkel?

No, you do not need any previous experience to snorkel, however, it is important that you can swim independently and feel comfortable in the water.

What kind of clothing should I wear?

We highly recommend long underwear and some warm socks. Wool or fleece is the best material to wear. You’ll be wearing the clothing under the dry suit.

Will I get wet in the water?

We provide you with high-quality neoprene dry suit so that your body stays dry. There is always a small risk that water can enter the dry suit, that is not dangerous but you can feel a little cold, therefore, we recommend you to bring an extra spare set of clothes and a towel, just in case. Note that your hands and face will get wet, which is completely normal.

What equipment is provided?

You will be provided with high-quality neoprene dry suit from Waterproof International and O’Three. As well as neoprene hood and gloves to protect your head and hands from the cold. You’ll also be given fins, mask, and snorkel.

How many snorkelers are on each tour?

Our client to guide ratio is 1 guide for every 6 snorkelers

What is the temperature in Silfra Fissure?

The water temperature is 2-4 degrees C (35-37 degrees F) all year round.

Are there toilet facilities in Silfra?

Yes, there are two toilet facilities at Silfra.

Is there any life found in Silfra?

Occasionally fish venture into Silfra from Þingvallavatn lake, but they will quickly swim back as they don’t like the cold glacier water. However, there is a lot of colorful seaweed including a bright green variety known as ‘’troll hair’’, which makes the fissure unlike anything on the surface.

How deep is Silfra fissure?

Silfra can be up to 60m deep. However, when you’re diving in Silfra than you will go about 7 to 12m deep, and the maximum diving depth that is permitted is 18m.

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Contact us for more information about this tour.

Adventures.com offers pick up service from selected Reykjavík pick up points. Note that you can always update your pick-up / drop-off location through our customer portal: https://my.adventures.com You can press the login button in your confirmation email for an easy login to the customer portal. If you experience an error with logging into the customer portal or can't find your booking, please contact us on Facebook Messenger, or send us a message here below. Chat with us on Facebook Messenger

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Snorkelling in Iceland between tectonic plates

By: Author Monica

Categories Iceland , my139

“The good news is that the water is 2°c today, it’s going to be great.”

I attempted to return our guide’s enthusiastic grin but I’m pretty sure I was less than convincing.

“It’s tough when it’s below freezing so 2°C is nice!”

I couldn’t help but admire the Icelandic optimism that I was starting to notice everywhere I went. Our guide, Chris, was actually British but the attitude had clearly rubbed off on him.

As a girl who is more used to swimming in 26°c water, 2°c suddenly seemed like suicide.

We were snorkelling with DIVE.is at Silfra dive site in Thingvellir National Park in south west Iceland. The site is about a 40 minute drive from Reykjavík so it’s a great place for a day trip from the city centre.

From the surface, Silfra looks like your average river running through the snowy (yes, I said snowy!) Icelandic countryside but it is actually a rift in the tectonic plates between North America and the Euopean/Asian plates. When swimming through the rift you’re literally swimming between continents and I happily imagined having one arm in America and the other in Europe.

Silfra is considered one of the best dive sites in the world thanks to the visibility of up to 120 meters. You won’t see many fish because the water is so cold so there is no food for them. But you will see an incredible landscape formed from lava rock as well as lots of algae and seaweed.

The rift expands by 2-3mm each year as the Earth shifts with evolution. Rocks hung precariously along the edge of the rift and we were warned to stay away as they could drop at any moment. Warnings like this make you realize how incredible this snorkeling spot is and how beautiful yet destructive nature can be.

The water in Silfra comes from Iceland’s second largest glacier, ‘Langjokul’, and it filters down the mountains, underground and down the porperous lava rock. It takes 30-100 years for the water to filter into Thingvellir National Park so you can understand why it’s so clear. It’s so clear and fresh that you can drink it as you swim along – definitely a novelty for anyone used to snorkelling in the sea.

What do you wear when snorkelling in the cold?

The water is so cold that you have to wear a drysuit rather than your average wetsuit. It was like a military procedure getting everyone kitted out in drysuits and we were soon awkwardly bumping into each other with stiff limbs and blinkered vision.

If you got even a drop of that freezing water trickling down your back it could ruin your experience so the guys were amazing at making sure we were airtight.

Your first layer is a thin base layer or thermal underwear. I wore regular leggings, a long sleeve t-shirt and super thick ski socks. Your second layer is a thick onsie that was so snug and warm I would have happily brought it home with me. The third layer is the drysuit that you have to wiggle and squeeze and shake and jump your way into. The drysuit has boots attached and rubber seals around the wrists and neck to keep the water out.

We were then fitted with ‘collars’ to make sure the water couldn’t sneak in. You then wear a hood and gloves, a snorkel, mask and fins and you’re good to go.

What is it like to snorkel in Iceland?

There’s no time to think about how cold the water will be. You’re straight in, face down and marvelling at the incredible colours, the clarity and the peaceful tranquility that you can only find underwater. The surface is so blue it almost doesn’t seem real and you can stare all the way down to the bottom.

The seaweed sways gently on the surrounding rocks and it waves you past as you make your way through the narrow passage.

There’s a gentle current that is strong enough to slowly pull you along but not so strong that you ever have to fight it.

Weirdly, the best way to stay warm when you’re swimming in cold water is to stay as still as possible. As soon as you move your hands or head a fresh gush of cold water seeps into your gloves and hood so the fact that you barely need to move is a godsend. With all the layers you’re wearing you’re as buoyant as a life raft so you’re free to sit back and enjoy the ride.

So I might have said that you don’t have time to think about the cold but that might have been a little white lie. It was beyond freezing. But it’s only your hands, feet, face and heads that get cold. Your body, arms and legs are toasty while the rest of you takes a hit.

The first 2-3 minutes and the last 2-3 minutes were the worst for me. Brain freeze hit me like a sledge hammer when I first put my face under the water and my fingers had never been so cold by the end.

After 30 minutes we emerged onto the snowy ground and it was actually a delightful relief and a welcome bit of warmth. It was such a stark contrast to emerge in to the white and snowy landscape after half an hour of bright blues and turquoise colours.

After an adrenaline fueled jump from the rocks into the icy waters, we peeled ourselves from our drysuits with lots of wiggling and tugging (something that no one in the world could ever make look good) and were surprised to find that our clothes and hair were all bone dry. We then warmed up with thick hot chocolate and plenty of biscuits to dunk.

This incredible experience was with   DIVE.is on their Silfra Snorkelling Tour. I received 50% off my trip but all thoughts and opinions are, as always, my own. I can highly recommend the team for an unforgettable trip. We had two guides for ten people and they were both funny, patient and helpful and very safety conscious.

The Ultimate Travel Blogger's Guide to Iceland - The Travel Hack

Saturday 11th of August 2018

[…] Snorkelling in Iceland between tectonic plates – The Travel Hack […]

The most incredible 36 hours in Iceland - EVER

Sunday 4th of February 2018

[…] Snorkelling in Iceland – it was chilly! […]

Monday 22nd of February 2016

Wow, those are some awesome photos! Although it looks a bit too cold for my taste ;)

But really impressed with the underwater photo.

Anne Slater-Brooks

Monday 20th of July 2015

Oh god. Reading this just had me shivering. I did my PADI divemaster qualifications in a quarry in Lancashire (I can imagine how envious you are!!), in a drysuit in 8 degrees. It was the stuff of nightmares, with shocking visibility and nothing to see anyway apart from students floating off into the ether. This does however look pretty awesome and loved the dive bomb at the end!! I stuck to the Blue Lagoon when I was out there though as that is more my required water temperature!

TheTravelHack

Oh my gosh, that pretty much sounds like my worst nightmare. I did my PADI on the west coast of Australia where it was so warm we didn't even wear wetsuits.

I don't blame you for sticking to the Blue Lagoon - definitely the comfortable option!

I’m going to Iceland! | Kirst over the World

Saturday 5th of July 2014

[…] and North American tectonic plates. I’ve read a couple of blogger accounts of this, from The Travel Hack and Flora the Explorer. It seems something so unique to Iceland, I’m not sure I can allow […]

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Snorkeling Tour Between Continents in Silfra with Free Underwater Photos & Snacks

Unforgettable Drysuit Snorkeling in Silfra with Underwater Photos & Transfer from Reykjavik

Golden Circle & Snorkelling in Silfra with Free Underwater Photos

Wetsuit Silfra Snorkeling with Underwater Photos & Transfer from Reykjavik

Drysuit Snorkeling in Silfra with Free photos | Meet on Site

Meet on Location 30 Minute Snorkeling Tour in the Crystal Waters of Silfra

Guided 6 Hour Drysuit Snorkeling Tour in Silfra with Snacks and Transfer from Reykjavik

Incredible 2.5 Hour Wetsuit Snorkeling in Silfra with Free Underwater Photos & Hot Drinks

Amazing 3 Hour Snorkeling Tour in Silfra at Thingvellir National Park

3 in 1 Bundled Discount Activity Tours with Snorkeling, Ice Caving & Glacier Hiking

Incredible 5.5 Hour Snorkeling in Silfra Tour at Thingvellir with Transfer from Reykjavik

Silfra Snorkeling & Horseback Riding | Free Underwater Photos

Fantastic 3 Hour Wetsuit Snorkeling in Silfra Tour with Transfer from Thingvellir

3 in 1 Bundled Discount Activity Tours with Volcano Caving, Snorkeling & Glacier Hiking

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Winter 5-Day Northern Lights Self-Drive Tour of Iceland’s South Coast with Ice Caving

Exciting 5 Hour Snorkeling Tour in Silfra with Hot Drinks & Entry to Laugarvatn Fontana Spa

Lava Tunnel Caving & Silfra Snorkeling with Underwater Photos

Unforgettable 4 Hour Nighttime Free Dive at the Silfra Fissure with Experienced Guides & Hot Drinks

Brilliant 9-Hour Combo Tour with Silfra Snorkeling and the Golden Circle from Reykjavik

Thrilling 9-Hour Combo Tour of Silfra Snorkeling and Raufarholshellir Caving from Reykjavik

Self-Drive Silfra Snorkeling Tour with Pure Pass Admission to Sky Lagoon

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Iceland’s Eruptions Are Inspiring a New Type of Volcanic Tourism

In Iceland , there’s a saying, Þetta reddast, used so frequently it’s often referred to as the nation’s unofficial motto. It means, roughly, “it's all going to work out in the end.”

When I visited Reykjavik in February—just a few days after a volcanic eruption cut off hot water to more than 20,000 people , and about two months after lava forced 4,000 more to permanently evacuate from the fishing village of Grindavik—one of the questions my tour group first asked Haflidi Kristinsson , our guide, was if he was concerned about the recent surge in Iceland’s volcanic activity .

After all, the latest eruption site was located just 25 miles from the nation’s capital Reykjavik (where approximately two-thirds of the local population lives), 12 miles from the Keflavik International Airport, and 3 miles from the world-famous tourist attraction, the Blue Lagoon . Iceland is no stranger to volcanic eruptions, but these were happening much closer to home; until the Fagradalsfjall eruption in 2021 , the Reykjanes Peninsula’s volcanic system had remained dormant for the last 800 years. It begs the question: why isn’t everyone freaking out?

“ Þetta reddast.”

This attitude may seem dangerously nonchalant. But perhaps the Icelandic view on the whims of mother nature is necessary when living on the rift of two tectonic plates, alongside 32 active volcanoes that erupt every 3 to 6 years.

Hikers watch the lava flowing from the erupting Fagradalsfjall volcano about 25 miles west of Reykjavik, on March 21, 2021.

“Imagine 500 years ago, being a farmer in Iceland. You never knew when a storm was going to hit. You never knew when a volcano was going to erupt and pour ash over your land,” says Ragnhildur Ágústsdóttir, the founder of Iceland’s educational Lava Show, who is also known to her Instagram followers as Lady Lava . “There was a lot of uncertainty. And I think this has really affected the mentality of Icelandic people.”

Icelanders have survived among such natural uncertainty like this for the thousand-plus years the island has been inhabited. Not only have they thrived in spite of volcanoes, but because of them—by harnessing the geothermal energy of volcanoes to heat homes, provide affordable electricity, and even bake bread , Iceland has become ​​the largest green energy producer per capita in the world.

In the beginning, the reawakening of the Reykjanes Peninsula’s volcanic system in 2021 was a gift to Iceland’s tourism economy, drawing hundreds of thousands of visitors to the smoldering lava field.

Fagradalsfjall was what they call a “tourist eruption.” Effusive fissure eruptions (the non-explosive ones), produce a slow and steady lava flow from cracks in the earth’s surface, making it easy to observe from a safe distance without worrying about sudden, violent explosions.

The eruption site in Geldingadalir couldn’t have been in a better place: a barren valley sealed off by surrounding mountains, containing the lava from nearby towns and roads. But despite its seclusion, it was incredibly easy to access—only a 35-minute drive from the Keflavík Airport, travelers could fly to Iceland and be mere feet from flowing lava within a few hours of arriving.

That year, thousands would gather in the valley’s ridges, nicknamed the “amphitheater,” to watch earth be created in real time. On March 28, 2021, a record-breaking 6,032 visitors were recorded at the eruption site, according to Iceland Tourism.

It wasn’t just tourists in the audience either. Kristinsson, who works with luxury travel operator Abercrombie & Kent , visited the eruption site with his family 37 times over a year and a half. For Iceland’s tourism professionals, the Fagradalsfjall eruption was a “winning lottery ticket,” Kristinsson says. “It was absolutely the best place possible. The next phase, this phase that's going on now, all of a sudden it was more serious.”

What has changed

Iceland has had 8 volcanic eruptions since December 2023, when a new fissure opened approximately 2 miles away from the fishing village of Grindavik (whose 4,000 residents were evacuated the month prior).

Unlike the previous Fagradalsfjall eruptions, the Grindavik site has remained off-limits to the public out of safety concerns. In January, three of the town’s homes were engulfed by lava; and in February, scientists recorded magma flow at a record-breaking rate of 7,400 cubic meters per second —around a hundred times faster than Fagradalsfjall.

The Blue Lagoon, located just a few miles from the Grindavik eruption site, has closed on and off since December 2023.

The Blue Lagoon closed for two months this winter, and hundreds of guests and staff were evacuated due to eruptions in March and May (it reopened on June 14). The eruption also poses a risk to infrastructure including nearby access roads, hot water pipeline, and power plants.

The most recent volcanic eruption that began on May 29 lasted for 24 days, forming the largest lava field so far. Hazardous areas surrounding active fissures are closed due to risks of unpredictable lava flow, toxic gas, earthquakes, and sinkholes.

But beyond the closed-off areas, Iceland remains completely safe for tourists—as long as you follow the local guidelines. There has been no effect on air travel to and from the country, unlike during the 2010 Eyjafjallajökull eruption (which took place beneath a glacier, causing abnormally large clouds of ash that grounded nearly 100,000 flights across Europe ).

Still, misinformation and confusion has caused some international travelers to cancel trips to Iceland out of fear, Kristinsson says. This year was expected to be a record-breaking year for tourism in Iceland, but as of this winter, bookings are lagging behind forecasts , reports Bloomberg.

However, with guidance from locals, travelers can embrace the Þetta reddast mindset for themselves. If you plan on visiting Iceland in your lifetime, knowing how to deal with volcanic unpredictability has become somewhat necessary: scientists believe the Reykjanes Peninsula could remain active for the next 100 years —or longer.

So what’s the key to the relaxed, yet guarded, sense of respect Icelanders hold for their at-times self-destructive home? It’s not denying, or ignoring, the reality of volcanoes—quite the opposite, in fact. Icelanders can recite geology and volcanology facts like the alphabet. The stories of past eruptions are passed through generations in Iceland, from the 1783 Laki eruption that caused a famine killing an estimated 20 to 25% of Iceland’s population, to the 1973 Eldfell eruption on the Westman Islands, where Kristinsson’s wife grew up—her town was evacuated one night without warning, before more than 400 homes were destroyed or buried by volcanic ash and lava.

It helps that Iceland is home to some of the world's best volcanologists and forecasting technology . While it’s still a real possibility to lose a home or an entire town to lava, it’s now become incredibly rare to be killed by an eruption. Since 1500 AD, there have only been 13 fatalities during eruptions in Iceland, one study found in 2008. (That number has not changed since.)

“All of us who live here know that potentially, a big eruption may happen. But the thing is, we have survived this in the past, and there's no saying that we won't survive it again,” says Ágústsdóttir. “We try to be prepared for when it happens, but we're not too concerned about it. We're not letting it affect our daily lives.”

One reason international travelers may find this mindset difficult to understand is that many countries don’t have the social services in place to create a safety net for citizens displaced by natural disasters, she says. But where Iceland may lack in physical security, it has made up with its social support network. After the majority of residents permanently evacuated Grindavik in November, Iceland’s government agreed to purchase their homes for 95% of the original purchase price in addition to subsidizing displaced residents’ rent in new homes through the remainder of the year.

Traveling to Iceland at this moment in history offers a different type of volcanic tourism—that has less to do with watching lava, and more to do with understanding its people.

“Everybody knows that it could happen to any of us at any time,” says Ágústsdóttir. “So we are there for each other.”

Visitors may not be able to visit the eruption site near Grindavik right now, but traveling to Iceland at this moment in history offers a different type of volcanic tourism—that has less to do with watching lava, and more to do with understanding its people.

For Kristinsson, the eruption site’s closure creates an opportunity for visitors to explore Iceland’s less-obvious natural and historical points of interest—for example, The Westman Islands, which experienced a similar fate to Grindavik following the 1973 eruption.

By connecting Iceland’s volcanic history to the current events of today, travelers can learn “what it means to live in a country like this,” he says. “Some of the places you can still visit are time capsules of something that is actually happening right now.”

Our fascination with volcanoes—both their destruction and their beauty—is primal, Ágústsdóttir says. “There's something about the destructive power, how powerless we feel against it,” she says. “I mean, it is beautiful. Nobody can deny that.”

The Mt. Fagradalsfjall hiking trails (pictured above in 2021) reopened in June 2024. Visitors can hike to previous eruption sites, including Selatangar, Húshólma, and Krýsuvíkurbjarg.

Getting close to Iceland's volcanoes

The Lava Walk on Westman Islands

This 2-hour hike on the island of Heimaey is led by a local guide over the lava field to the top of the Eldfell Volcano, providing insight into the 1973 eruption and how the people of Vestmannaeyjar were able to rebuild their town. End the tour with a visit to the Eldheimar museum , centered around the remains of a home buried in the eruption to learn more about Heimaey, nicknamed the “Pompeii of the North.”

Fagradalsfjall hiking trails

Hike the now dormant Fagradalsfjall volcano to the craters of Litli-Hrútur formed during the 2021 eruptions. (For the most up-to-date information on which hiking trails are open , check Safetravel , a resource run by The Icelandic Association for Search and Rescue.)

See the Lava Show

Perhaps the safest way to see flowing lava up close, the Lava Show is an immersive, family-friendly demonstration that superheats real lava collected from the 1918 Katla eruption up to 2000°F (you can feel the heat inside the showroom) while educating the audience about the history of Iceland’s volcanoes. With locations in Reykjavik and Vik, it’s a fun indoor activity for those traveling with younger kids (or trying to stay busy on bad weather days).

Bake geothermal bread

To experience one of the most creative ways Icelanders harness Volcanic energy, learn how to bake rye bread in an underground hot spring at Laugarvatn Fontana , a lakefront spa with natural steam baths, outdoor mineral pools, and a sauna about a 1.5 hour drive from Reykjavik.

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Scientists identify main source that could be fueling Iceland’s hotbed of volcanic activity

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After 800 years of calm, volcanoes have awakened in the Reykjanes Peninsula of Iceland — about 56 kilometers (35 miles) south of the nation’s capital, Reykjavik.

Since 2021, a string of eruptions has disrupted everyday life in the densely populated area, leading to evacuations , power cuts and infrastructure damage, as well as stoking fears of an event like the eruption of Eyjafjallajökull, a large volcano about 80.5 kilometers (50 miles) to the southwest that caused an international travel crisis in April 2010.

While there is no risk of a global calamity happening, researchers are now warning that new scientific evidence suggests the eruptions originating from the Reykjanes Peninsula could continue for years or even decades. The prolonged volcanic activity could lead to more disruption and potentially force the long-term evacuation of Grindavík, a fishing town of over 3,000 residents that’s also the gateway to Iceland’s biggest tourist attraction — the Blue Lagoon geothermal pool.

“I think we need to get ready for giving up Grindavík,” said Valentin Troll, a professor at the department of Earth sciences of Uppsala University in Sweden, and lead author of a study on the eruptions, published Wednesday in the journal Terra Nova.

“It can still survive as a fishing port, with people going in and out. But people staying there, with the possibility of a very rapid onset of volcanic activity, I don’t think that’s recommended. What we think right now is that the eruptions will likely continue as we have seen over the last three years, and our results would support that.”

To be able to predict whether the eruptions would continue and how future volcanic activity might play out, Troll and his fellow researchers took a fresh approach by bringing together two separate branches of science that revealed a primary underground source of magma, or molten rock, fueling activity in the Reykjanes Peninsula.

Hugh Tuffen, reader in volcanology at Lancaster University in the United Kingdom who was not involved in the report, said the research made a solid case for the frequency of eruptions in the coming years. “This study provides a useful synthesis of evidence from the history of eruptions on the Reykjanes peninsula, the chemistry of the erupted lavas and the depth and nature of earthquakes,” he said.

“The evidence all points to the establishment of a single magma reservoir beneath (the volcano) Fagradalsfjall, and that this reservoir can then feed eruptions at different positions on the Reykjanes peninsula, depending on the shifting stresses in the crust.”

A new age of volcanic eruptions in Iceland

Iceland, which is roughly the size of Kentucky with a population of nearly 400,000, boasts more than 30 active volcanoes that have become tourist attractions within the country’s breathtaking scenery.

The high number of volcanoes that are either actively erupting or indicating signs of disquiet is due to the fact that the island sits on a boundary between tectonic plates (gigantic slowly moving pieces of the Earth’s crust and uppermost mantle), Troll explained, creating cracks that allow magma to come up.

“The Reykjanes peninsula is exactly on this plate boundary,” he added, “and it seems that we are now witnessing the earliest part of a major eruption episode. That’s a recurrent phenomenon on the peninsula, with 800 years of pause or quiescence, followed by 100 or 200 years of intense eruptions, followed by another quiet period. Scientifically, we are lucky to be able to observe this, but from a societal point of view we are not, because it happens in a very populated part of the country with a lot of infrastructure.”

There is now a vast barrier system in place around Grindavík to protect the town, with lava pushing against it in many places, Troll said. A power plant is also in the area, and it supplies Keflavík International Airport, the country’s main airfield that’s perched at the tip of the peninsula. “If the power plant is affected, we might have energy shortages at Keflavík airport in the long run. This could then have an effect on international travel,” Troll said.

However, he added, the probability of an Eyjafjallajökull-style event is rather slim, because the situation in the Reykjanes Peninsula is different — the lava fields are shallow, and the eruptions in the past three years were not remotely close to the levels of Eyjafjallajökull.

Key magma resevoir revealed

The research team looked at the issue from the standpoint of geochemistry and geophysics.

First, the team used geochemistry to look at the composition of the lava and recognized a similarity between samples taken several miles apart. This finding shows that the eruptions are all fueled by a shared magma reservoir that sits 9 to 12 kilometers (5.6 to 7.5 miles) below the surface, rather than different sources.

Then, the scientists used geophysics to look at the distribution of a series of earthquakes connected to the eruptions, and found a cluster of deep seismicity at exactly the same depth underground. “It’s straight under a volcano called Fagradalsfjall, and that seems to be the main magma chamber or macro reservoir, supplying other volcanoes as well,” Troll said.

“That’s good news, in a way, because it means that we will have individual, smaller eruptions likely going on for some time, but not many simultaneous eruptions along the entire peninsula,” he explained.

The combined use of geochemistry and geophysics is not frequent, but can lead to educated guesses on how many eruptions can come from a volcano, according to Troll.

“The strength of this study and what makes it really powerful is that we’re combining two fundamentally independent methodologies to come up with very similar conclusions,” he said.

“Geochemistry says the magma is of the same source, and seismic tomography says there’s only one main reservoir at depth. Putting these two things together gives quite some strength to our prediction.”

Seismic tomography is a process that tracks and analyzes patterns of seismic waves generated by earthquakes in order to detect and characterize Earth’s interior features as three-dimensional models.

Monitoring seismic activity

The study is interesting and the results are convincing, said volcanologist Einat Lev, an associate research professor at the Lamont-Doherty Earth Observatory at Columbia University in New York.

“I think it’s great to see geophysics and geochemistry being used in synergy to answer important questions about the Earth,” said Lev, who was not involved in the study. “The volcanology community understands that cross-disciplinary collaborations are critical, and it is definitely a direction we are working towards.”

She added that the eruptions might indeed threaten Grindavík. “We have seen already that even if magma doesn’t erupt or if the lava doesn’t flow towards the town, ground inflation and deflations as well as the cracks they create threaten the stability and safety of Grindavik’s infrastructure.”

Combining different types of evidence, such as geochemical information about the lava and geophysical data from the earthquakes, is fairly novel and it’s exciting that they both agree, said Jessica Johnson, an associate professor of geophysics at the University of East Anglia in the United Kingdom, who also did not participate in the work.

Demonstrating that the magma is being supplied from a shared reservoir has implications for the frequency of eruptions and how long they will go on for, she added.

“It means there is a large supply of magma that is easy to erupt, allowing eruptions to happen in the region for a long time to come,” Johnson explained.

“Unfortunately, as the storage region is quite large, it means that it is harder to say exactly where the next eruption will be. That is why everyone in the area needs to be prepared for ongoing eruptions.”

According to Tuffen of Lancaster University, the study emphasizes the importance of ongoing monitoring efforts. Icelandic geoscientists and international collaborators are tracking the frequency and intensity of seismic activity and ground deformation in real time to rapidly assess the likelihood of future eruptions as magma amasses in Earth’s crust and new pathways unfold.

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• ADVENTURES EVERYWHERE

National monuments are underrated—these are some of our favorites

Skip the crowds, timed entry, and gridlock at the national parks and head to some of America’s other natural wonders.

Some national monuments have an image problem. Many visitors arrive at them expecting bronze historical markers and granite statues. Instead they find canyonlands, wooded wilderness, or alpine meadows that could pass for the Grand Canyon , Yellowstone , or Yosemite . Monument rangers and staff often get asked, “How is this not a national park?”

The simplest answer is politics. The birth of a monument is easier. Congress must approve a national park’s designation, but a national monument needs only a presidential declaration.

Things get trickier when it comes to transitioning from a national monument to a national park. Local communities can be both for and against a legislative push for park status. The communities neighboring the Colorado National Monument, for one, have debated designation for over a decade, spurred by concerns about increased traffic and restrictions . Even with an otherwise united front, special-interest organizations can derail the push for designation, as the Idaho Farm Bureau did for Craters of the Moon.

While national parks are all run by the National Park Service (NPS), monuments are divided among the NPS, the Bureau of Land Management, and the U.S. Forest Service, each with different funding structures and restrictions.

With the most popular parks requiring timed entries , there’s definite appeal to being an under-the-radar monument. The following four national monuments deliver a national park experience without the crowds.

Colorado National Monument

Instead of: Grand Canyon National Park

Many canyonlands claim to be a “mini Grand Canyon,” but the Colorado National Monument is part of the same physiographic province as that famous national park: an elevated sheet of sandstone, shale, and limestone called the Colorado Plateau that spans four states. The monument shares the same wind- and water-sculpted features of   Arizona’s Grand Canyon National Park, eight hours to the southwest, and Utah’s Arches National Park , two hours to the west—but with a fraction of the visitors those parks get.

“You come and have an experience all to yourself. Just you and a bighorn sheep on a trail,” says Johanna Van Waveren, executive director of the nonprofit Colorado National Monument Association , which works with the NPS management to support stewardship.

The monument’s 23-mile road has two gateways minutes outside of Grand Junction and Fruita, Colorado , both recreational playgrounds in their own right just off I-70. The drive cuts and climbs, eventually circling canyon rims. Short trails have knockout views of freestanding formations and the mountains to the east, where the spine of the Continental Divide is finally giving way to this high desert.

For Van Waveren, the most precious moments are off the pavement and outside of the reservable campground—looking up at the sheer sandstone walls of Ute Canyon or finding wildflowers in bloom while hiking the No Thoroughfare Canyon Trail .

“I hear it all the time, ‘Why don’t more people come here?’” she says.

(This national monument in Arizona honors Indigenous homelands.)

Craters of the Moon National Monument and Preserve

Instead of: Yellowstone National Park

With no towering volcanoes in sight, visitors to Idaho ’s Craters of the Moon are confounded by its flows of ancient lava. Just 66 miles outside of legendary ski town Sun Valley, Craters of the Moon celebrates its centennial this year . One of the first national monuments, it was established less than 10 years after the NPS itself, to protect this “weird and scenic” moonscape.

The monument’s otherworldly landscape is a geologic rift valley , where tectonic plates separated as recently as 2,000 years ago. Fissure eruptions of fluid basaltic lava through these cracks left behind lunar-like terrain splattered across the Snake River Valley. The NPS and Bureau of Land Management co-manage the contrasting topographies within the monument.

“It’s really a place quite unlike any other in the lower 48,” says Wade Vargias, monument superintendent. “If you wanted to see more recent lava flows, you’d need to travel to Hawaii or Iceland.”

Over the last century, the monument has hosted NASA training teams and curious visitors to this jagged landscape. Like its seismic sister Yellowstone, four hours to the northeast, the monument’s loop road takes in geologic curiosities such as craters, spatter cones, and lava tubes. Campers can settle at one of 42 sites without a reservation to enjoy its Dark Sky designation .

Vargias’s tip: For a commanding view of the sunrise, climb to the top of Inferno Cone .   If the sky is clear, the jagged maw of the Teton Range, 138 miles to the east, hems the horizon.

Katahdin Woods and Waters National Monument

Instead of: Acadia National Park

Designated a monument in 2016, this massive stretch of Maine’s North Woods is on many speculators’ shortlists for future park status . Here, the ancient Appalachians stretch through one of the last undeveloped watersheds in the Northeast. Just 150 minutes from one of the country’s most visited parks, the NPS-managed Katahdin is a stark contrast to the coastal crowds of Acadia .

“You go out on a canoe and feel like you are in another world,” says Brian Hinrichs, executive director of the nonprofit Friends of Katahdin Woods and Waters . “You don't see another soul. You don’t see any sign of human life. It‘s really a chance to have that full escape.”

Hikers can take on the storied Appalachian Trail and push towards its terminus on Mt. Katahdin or take in vast forested vistas from Barnard Mountain Trail . The monument is an International Dark Sky Sanctuary , elevating the off-the-grid camping experience.

The Friends of KWW supplements the NPS, infusing $2.7 million raised last year into visitor infrastructure and scientific monitoring. This fall, the   Tekαkαpimək Contact Station, a welcome experience for visitors designed and led by the Penobscot Nation, will helm the monument’s 17-mile loop road.  

(One of these 7 places might be the U.S.’s next national park.)

Mount St. Helens National Volcanic Monument

Instead of: Mount Rainier National Park

Next to Mount Rainier , in Washington State ’s mountainous west, this oft forgotten monument bears an infamous name. For most, Mount St. Helens conjures the most destructive volcanic eruption in the United States . Yet more than 40 years later, the monument has lupine-dotted slopes and thriving stands of hemlocks and silver firs. As others wait in lines to enter Rainier, visitors to this monument can be striding out toward the 8,000-foot summit, following the path of long-gone lava, or hiking a trail through forests and fields.

Three access points to the monument offer vastly different experiences. Visitors centers on the northwest side share human impact stories from the volcano’s eruption. The south is the gateway to the summit and the lava tunnels. Here, intrepid hikers grab timed entries and headlamps for the Ape Cave trail , traveling through a cavernous lava tube formed 2,000 years ago. To the northeast, Windy Ridge takes in the largest stretch of land that has not recovered.

In every corner, the volcanic monument resonates with power. “Whether you’re at the summit or Johnston Ridge, looking at Mount St. Helens, there’s something about that place that really humbles people,” says Alyssa Hoyt, strategic projects director of the Mount St. Helens Institute , which supports the U.S. Forest Service’s management. “You feel incredibly small and yet, at the same time, you feel a part of this immensity that’s around you, a connection to the bigger world.”  

Related Topics

• NATIONAL PARKS
• PROTECTED AREAS
• OVERTOURISM
• CANYONEERING

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