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Iceland Lava Tunnel & Silfra Snorkeling Adventure
4.6
166 Ratings
Raufarhólshellir
Explore Raufarhólshellir lava tunnel and snorkel in Silfra fissure at Thingvellir National Park. Discover Iceland’s stunning natural wonders on this unique adventure.
Explore Raufarhólshellir lava tunnel and snorkel in Silfra fissure at Thingvellir National Park. Discover Iceland’s stunning natural wonders on this unique adventure.
Duration:
9 hours
Cancellation:
24 hours
Highlights
- Raufarhólshellir - Discover the enchanting beauty of the Raufarhólshellir lava tunnel and enjoy snorkeling between the Eurasian and North American tectonic plates. The Silfra Fissure is the unique spot on Earth where you can swim between continents! Participants can either meet at each tour location or select the Reykjavík Transfer option, where…
- Raufarhólshellir - Discover the enchanting beauty of the Raufarhólshellir lava tunnel and enjoy snorkeling between the Eurasian and North American tectonic plates. The Silfra Fissure is the unique spot on Earth where you can swim between continents! Participants can either meet at each tour location or select the Reykjavík Transfer option, where they will be picked up, transported between sites, and dropped off.
Reykjavík pickup and drop-off services are available on Mondays, Wednesdays, and Saturdays during the summer (May 15-August 31), and daily throughout the winter (Sept 1-May 14).
What's Included
- Free Underwater Photos Taken By Your Guide
- Optional Reykjavík Transfer on Select Days Weekly - Pickup & Dropoff
- Certified PADI Diveguide / Divemaster
- Visit Thingvellir National Park, a UNESCO World Heritage Site
- All Necessary Caving & Snorkeling Gear
- Hot Chocolate + Cookies After Snorkeling
- Free wi-fi on board
- Free Underwater Photos Taken By Your Guide
- Optional Reykjavík Transfer on Select Days Weekly - Pickup & Dropoff
- Certified PADI Diveguide / Divemaster
- Visit Thingvellir National Park, a UNESCO World Heritage Site
- All Necessary Caving & Snorkeling Gear
- Hot Chocolate + Cookies After Snorkeling
- Free wi-fi on board
What's Not Included
- Gratuities
- Food and drinks
- Gratuities
- Food and drinks
Additional Information
Embark on an unforgettable journey that combines two of Iceland’s most stunning experiences.
Start your adventure with an exhilarating exploration of Raufarhólshellir, one of Iceland’s longest and most famous lava tunnels. Situated just 45 minutes from Reykjavík, this remarkable underground passage captivates with its vibrant colors and intriguing rock…
Embark on an unforgettable journey that combines two of Iceland’s most stunning experiences.
Start your adventure with an exhilarating exploration of Raufarhólshellir, one of Iceland’s longest and most famous lava tunnels. Situated just 45 minutes from Reykjavík, this remarkable underground passage captivates with its vibrant colors and intriguing rock formations, providing a unique insight into the core of a volcanic wonder.
Then, head to the Silfra Fissure in the UNESCO World Heritage-listed Þingvellir National Park. Dive into the crystal-clear waters for an unmatched snorkeling experience, where you’ll float between two continental plates in a surreal, otherworldly setting.
With a knowledgeable guide accompanying you, discover the secrets of Iceland’s geological marvels as you explore a captivating lava cave and immerse yourself in Silfra’s pristine, dreamlike underwater realm.
- Minimum age is 12 years old. Participants under 18 must be accompanied by a parent or adult guardian booked on the same tour.
- It is recommended to bring warm outdoor clothing, packed lunch, thermal underwear, a change of clothing, towel, gloves, hat and good hiking shoes
- Wear glasses? Since you’ll be wearing snorkeling goggles to see underwater there can be nothing in the way of the seal therefore you cannot wear glasses underneath the goggles.In this case, contact lenses or your own prescription goggles are recommended.
- Requirements: Weight limit: 45-120kg. Height limit: 150cm – 200cm. Must be able to swim.
- Please review 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. https://adventures.is/media/230104/arctic-adventures-snorkeling-silfra-guide.pdf
- Pregnant women can unfortunately not participate in the snorkeling tour due to the risk of cold water entering the suit.
- Medical issues outlined in our handbook require doctors approval to join the tour. Some conditions mean guests cannot participate.
Location
Raufarhólshellir
The first meeting point is Raufarholshellir Lava Tunnel for your 9:30 tour.
Next, meet us in Thingvellir National Park for snorkeling at 13:30 (Sept 1-May 14) or 14:00 (May 15-August 31). Please arrive at least 15 minutes early. Park at ''Thingvellir P5''.
Cancellation Policy
For a full refund, cancel at least 24 hours before the scheduled departure time.
For a full refund, cancel at least 24 hours before the scheduled departure time.
Customer Ratings
4.6
(166 Ratings)
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Courtney_m
May 7, 2025
Must Do Activity - If I could rate this a 100/5 stars I would. This is a once in a lifetime experience. The lava tunnel team created an atmosphere that was educational while also adventurous. The snorkeling was so unique! My husband and I were nervous about the cold at first but if you listen to the instructors it’s really only your hands and face getting wet. The team breaks you into such small groups you feel like you’re getting a very personal experience with a professional team. I am so glad we booked this tour! It’s something we will always share as a must do activity with future travelers.
Review provided by Viator
David_t
Mar 1, 2025
We had a great time. The... - We had a great time. The trip into the lava tunnels was very a great way to start the day and snorkeling between the tectonic plates was a once in a lifetime experience!
Review provided by Viator
Daydream10364781743
Oct 6, 2024
Pleasure and beauty - Our guide Theresa was great. She explained everything well, was always courteous and helpful. All the time she kept good humor.
Review provided by Tripadvisor
Robert
Jan 3, 2024
Black and Blue Arctic Adventure! - The Arctic Adventures Black and Blue tour.
The Lava Tunnel experience was excellent. Our guide was a very knowledgeable Greek chap named Dimitri who made the trip very entertaining. The tour provides crampons and a light/helmet for the walk into the history of a lava tunnel. Many photo opportunities and a fantastic time had by all.
In the afternoon after a lunch break we transferred to the Silfra fissure for snorkelling. Theresa was an exceptional guide who kept us safe and entertained. The preparation is very thorough: personal base layer, warm body suit and a well fitted dry suit. Gloves, hat, mask, snorkel and flippers and we were ready to go after about 45 minutes. The water is so clear. The equipment kept us buoyant and warm. After initial instructions we drifted with the current through the fissure with amazing views below us. The team take photos for downloading later so you don’t need to take a camera if you don’t want to. After 30 minutes or so we were out of the water, heading back to get into warm clothes for hot chocolate and a snack. This is an unforgettable experience that we all enjoyed (13-51y!).
Yes your face gets cold.
Yes your lips feel a little swollen - but the water is 2-4 degrees C!!
Excellent team providing an excellent experience. Thank you!!
Review provided by Tripadvisor
W8000ozerich
Apr 25, 2023
Out of this world - What an amazing experience. Even though the weather was horrible it made for a perfect day to be in the lava cave and snorkel in the Silfra. Both our guides were very knowledgeable and helpful with gear. Both tours were so unique and out of this world. Don't worry about being too cold in the Silfra water. The gear keeps you very warm and the experience is unforgettable.
Review provided by Tripadvisor
Hungrykayak
Feb 10, 2023
The Trips, The Guides! - Absolutely Superb.
Before I write my review it's EXTREMELY important to remember where you are visiting if you are planning to visit Iceland. The weather WILL affect your trip in some fashion!! That is a certainty. Don't complain on tripadvisor if the weather interferes with your trip!! For instance, if you choose to SNORKLE in Arctic temperatures you are GOING TO GET COLD!!! If you travel in Iceland in winter expect to get cold and wet occasionally!!! Common sense really!!!
Arctic Adventures displayed the type of professional yet fun service that many companies cannot manage to achieve. The company has put together tours that are entertaining, informational and absolutely great craic!!
Our guides on our trips were simply fantastic.
HILMAR took care of us on our trip to the Katla Ice Caves, his driving skill in the most challenging conditions cannot be understated. I drive in similar conditions myself and would like to say his driving was impressive!! He kept the whole group entertained and was an absolute gentleman. He made a long day on the bus in awful weather a huge amount of fun!! Thank you HILMAR, I hope you enjoy your salmon fishing this year!!
Siggi was our guide the following day for our trip snorkeling to the Silfra Fissure. Siggi is a GEM!! His attention to us, care and consideration was beyond belief. He spent an age absolutely freezing himself, helping everyone else get dressed first. He went WAY above and beyond. That was not easy and his attitude never once changed. He was just fantastic!!
It's so pleasing to see that the customer actually matter to this company and this shows via their guides.
I am going to be returning to Iceland next year and will spend the full week with the company due to the service I received this time around.
Thank you guys!!!
Review provided by Tripadvisor
Megan_s
Jun 24, 2025
Enjoyed both activities but waiting at bakery for 2 hours wasn’t pleasant. - The lava tunnel was neat but different than I expected. Snorkeling was absolutely amazing! I loved that our guide Oliver took some photos during the adventure. I wish I would have booked them separately as waiting almost 2 hours at a bakery with no bathroom was not pleasant.
Review provided by Viator
Kikyo87
Mar 20, 2023
Great Experience and highly recommended! Some knowledge before to make it exceptional to what to take for prep - We started off the day by the lava tunnel - personally I found this to be a bit short in terms of experience but very interesting and excellent guide there.
We then went to Silfra for the snorkelling - I must suggest anyone who goes during cold winter - please take your beanie and super warm gloves
We were not told how long we would spend out preparing in dry and wet suit in the windy windy windy cold cold place and I was honestly in agony. Had they informed us to take beanie and gloves I would have been a lot more comfortable during the waiting time to go down (between prep and all)
However I must praise Dimitri who took care of us - he made the experience super enjoyable and took some great photos!
Apart from lack of beanie and gloves / place to keep warm during the 1hr+ prep time I highly recommend this experience
Review provided by Tripadvisor
Shavit_l
May 16, 2025
Do it! But not with arctic adventures! - The experiences themselves were 5 stars, 6 if possible.
However, the organizing company - Arctic Adventures was extremely unprofessional, rude at times and put a damper on an otherwise great day.
We didn't use their shuttle service as we have our van we are roadtripping with so when arriving at the cave (as requested 15 mins before start time) we were very much surprised to hear our "group" had actually arrived much earlier and had started the cave tour without us, we had to wait an hour to join the next tour.
The cave was beautiful, guide was knowledgeable, entertaining and our time underground was a fantastic experience.
After this we had to rush to the snorkeling site to be there at the appointed time only to discover that our reservation was changed without our knowledge to a later time.
The snorkeling guide was not helpful and honestly quite rude about the situation.
After some coaxing we managed to join our original snorkeling time with a rather dismissive unpleasant guide.
The snorkeling itself was fantastic and we can not recommend it enough, definitely make sure you get a tour with pix cause it's worth it.
BUT DO NOT BOOK WITH ARCTIC ADVENTURES!
Review provided by Viator
Gloria_s
Aug 20, 2024
Fun but confusing - The tours were each fun . But when booking they don’t tell you that your on 2 different tours and we didn’t have any idea about how we meet the second half of the tour . Not very clear on the itinerary
Review provided by Viator
