Spend an adventurous day exploring two of Iceland's most unique geological features during this full-day tour from Reykjavik. First, wander through the otherworldly Raufarhólshellir lava tunnel, with its colorful rock formations. Then, visit Thingvellir National Park, a UNESCO World Heritage Site, for a snorkeling adventure. Swim in the impressive Silfra fissure, for a chance to snorkel between the tectonic plates of America and Eurasia. Round-trip transportation from downtown Reykjavik and all necessary gear are included.

Small group guarantee, ensuring a more personalized experience
Explore a typical Icelandic lava tube cave
Spend a day at the UNESCO-listed Thingvellir National Park
Snorkel between the North American and Eurasian tectonic plates
Reykjavik pick up and return transfer

What's Included

Small group guarantee, ensuring a more personalized experience
Reykjavik pick up with return
An expert caving guide
Certified PADI Diveguide / Divemaster
All necessary caving and snorkeling gear
Guided snorkeling tour in Silfra fissure
Guided lava caving exploring
A visit to Thingvellir National Park, a UNESCO World Heritage site.
Free wi-fi on board

Gratuities
Food and drinks

Meeting And Pickup

Pickup points

Select a pickup point

Start time

08:45 AM

Pickup details

Please note that we only serve the pick-up locations specified in our pick-up list below. Due to traffic restrictions, we are not allowed to pick up from hotels in the city center nor from private Air BnBs. If your pick-up location is not on our pick-up list then we kindly ask you to find the closest pick-up point to your accommodation from our list: 22 Hill Hótel – Brautarholt 22-24. Arctic Comfort Hótel – Síðumúli 19. BSÍ Bus Terminal – Vatnsmýrarvegi 10. Bus Hostel Reykjavík – Skógarhlíð 10. Bus pick up/drop off nr.1 – City Hall, Vonarstræti Bus pick up/drop off nr.4 – Miðbakki Bus pick up/drop off nr.6 – Safnahúsið (The Culture House) Bus pick up/drop off nr.8 – Hallgrímskirkja Church Bus pick up/drop off nr.9 – Snorrabraut Bus pick up/drop off nr.12 – Höfðatorg Bus pick up/drop off nr.15 – Vesturbugt Cabin Hótel – Borgartún 32. Eyja Guldsmen Hotel – Brautarholt 10. Grand Hótel Reykjavík – Sigtún 38. Grayline – Main bus terminal - Klettagarðar 4. Hilton Reykjavík Nordica – Suðurlandsbraut 2. Hótel Ísland – Ármúla 9. Hotel Ørkin – Brautarholti 29. Icelandair Hotel Reykjavík Natura – við Hlíðarfót, Nauthólsvegur 52. Klettur Hótel – Mjölnisholt 12-14. N1 Gas Station – Ártúnshöfði Radisson Blu Hótel Saga – við Hagatorg. Reykjavík City Hostel – Sundlaugavegur 34. Reykjavík Lights Hotel – Suðurlandsbraut 12. Skarfabakki – Cruise Ship, Reykjavik Harbor, 105 Reykjavik

What To Expect

Following pickup from downtown Reykjavik, climb aboard a comfortable, climate-controlled minibus for the journey to the Raufarhólshellir lava tunnel. Get fitted for your caving gear and follow your guide through the colorful underground system. See shield volcanoes, products of lava flows that have left spectacular layers of rock and lava deposits over the years.

Then, enjoy a break for lunch (own expense) before heading to the UNESCO-listed Thingvellir National Park.

At the Silfra fissure, slip on your snorkeling gear and explore the underground pool. Drift between the tectonic plates that separate North America and Eurasia, and check out the most scenic areas of the pool with your guide.

After a day of exploring, conclude with drop-off back at your original departure point.

Additional Info

Confirmation will be received at time of booking, unless booked within 2 days of travel. In this case confirmation will be received within 48 hours, subject to availability
This tour is a small group experience tour limited to 12 participants per guide
Minimum age is 12 years old
It is recommended to bring warm outdoor clothing, packed lunch, thermal underwear, a change of clothing, towel, gloves, hat and good hiking shoes
Please note that the order of the itinerary can be altered by the operator if deemed necessary.
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: Must be 12 years or older. Guardian´s approval needed for minors under 18. Weight limit: 45-120kg. Height limit: 150cm – 200cm. Must be able to swim.

Not wheelchair accessible
Near public transportation
Not recommended for pregnant travelers
No heart problems or other serious medical conditions
Travelers should have a moderate physical fitness level
This tour/activity will have a maximum of 18 travelers

Cancellation Policy

You can cancel up to 24 hours in advance of the experience for a full refund.

For a full refund, you must cancel at least 24 hours before the experience’s start time.
If you cancel less than 24 hours before the experience’s start time, the amount you paid will not be refunded.
Any changes made less than 24 hours before the experience’s start time will not be accepted.

Cut-off times are based on the experience’s local time.
This experience requires good weather. If it’s canceled due to poor weather, you’ll be offered a different date or a full refund.

Traveler Photos

Featured review

Jennifer_D

The snorkeling was one of the coolest things I’ve ever experienced! While it was cold, the tour guides tell you exactly what you need to do to have the best experience in the water. I would HIGHLY recommend.

Reviews

4.5

157 reviews

Total review count and overall rating based on Viator and Tripadvisor reviews

Reviews by Viator travelers.

Showing 1-10 of 157 reviews

Cold but AMAZING

Jennifer_D, Dec 2022

Cool experience, but no photos and rude guide.

Kasey_S, Oct 2022

The actual experience of snorkeling was very amazing. Our guide was very rude to us and our group of four did not get any photos. It was a real shame because all the other maybe 50 or so people there that day did get photos and their guides seemed quite nice. I think it was a matter of us having a bad tour guide. But when I contacted customer service about our experience they offered us nothing and didn’t even apologize for the tour guides attitude towards us. Three of four of us also ended up lost in a cove so the guidance wasn’t super great during the tour either.

Worth it!!

Kavya_M, Jul 2022

This entire trip was just amazing! Our guide for the lava caving was very funny and had great fun facts. The snorkeling experience was incredible! The water was just so beautifully clear. Can't recommend enough! Mino and Fede were awesome 👍

Find out actual time doing event next time

Kimberly_C, Jun 2022

Only half hour at actual activity and wetsuit with hole in it that they were aware of, I was the lucky one who got said suit

Pros and Cons

Lucille_K, May 2022

Hey there. I had the BEST tour guides. They were funny, spirited, and had the Icelandic history down pat. However, I didn't appreciate getting water all in my dry suit. Despite the stunning views below, losing feeling in my hands and arms dampened this quite a bit.

Superb day enjoying truly...

Chris_A, Apr 2022

Superb day enjoying truly unique experiences. The guides for both tours knew their stuff and helped make the day!

Cave was very nice,...

Joey_T, Mar 2022

Cave was very nice, especially in winter. Make sure you have medical approval for snorkling, then it's very nice to do once.

10/10 experience

Bridget_Q, Feb 2022

The snorkling was one of the best things we have ever done! The wetsuits worked wonders and kept us warm. The water was crystal clear and it was just an otherworldly experience swimming through 2 tectonic plates! Our guide Siggy was fantastic and very helpful and patient! He was also very nice and took photos of us. 10/10 would recommend to anyone and would definitely do it again!

Amazing

Michael_S, Aug 2019

This tour was our favorite. Hiking in The cave was a lot of fun and very interesting. The Snorkerling was the best. We were all a little nervous about Snorkerling in near freezing water but it was fine. The views were incredible! It’s the clearest water ever and you can drink it. I highly recommend this for the adventurous family!!

Cali girl birthday trip!

Marcelena C, Nov 2018

Kevin was our guide and he was amazing!!! Assured us if our safety, gave through instructions, made you feel safe and came to get me when the windy water became rough. This excursion was one not to miss even though the suit was super restrictive and tight around the neck but I guess it’s supposed to be that way, they doubled checked mine. Great adventure

educational and fun!

arwengreensley, Aug 2018

We enjoyed Jonas and Apollo's tour of the lava cave where we learned quite a lot about lava, and did some good exercise crawling through the caves. The snorkeling trip was really well organized and an excellent experience to have!

Badass experience

Andoni_G, Aug 2018

This was a much cooler experience than I expected. Lava caving you actually climb around in underground tunnels and get dirty. You experience complete darkness and sensory deprivation and get to learn a TON about volcanic activity and the formation of the tunnels. The guides were both incredibly cool and extremely knowledgable.Silfra was cold. No other way to put it. But that was by far the clearest water I've ever seen in my life. The instructors were super funny and pretty awesome people. There isn't life under there which is a bit unfortunate, but it was still an experience worth doing.

A Must Do Adventure - Great Experience!!!!

Robert_S, Jul 2018

We had a great day!! Our guides, Mikka, Becca and Lena were all terrific. Taz, the woman who prepared and accompanied us snorkeling could not have been any nicer and prepared us well for the adventure we were about to undertake. Our group of six adults (my wife and I and our daughter and son and their spouses) all had a terrific time and felt it was a once in a lifetime experience!!!

Amazing trip. Our guide was...

Paul C, Apr 2018

Amazing trip. Our guide was extremely knowledgeable and was very passionate about the volcanoes, caves, and lava tube. You could tell she loved what she was doing and was joyful to share everything she knew with us. Snorkeling was also incredible, you could see clearly for well over 50 meters.

Highly recommended! Amazing views and...

Mur1, Apr 2018

Highly recommended! Amazing views and memories... wish I could do it again.

Loved the lava caving! Birka not...

Faith_S, Apr 2018

Loved the lava caving! Birka not sure about spelling! was a wonderful guide. Snorkeling was a lot of work to get suited up and our snorkel was very short. Our group was split and half our group went out ahead yet we finished at same time and no pictures were taken but were with the other half of our group so seemed our group was rushed.

Day Trip was well organized. but not...

LESLY_P, Feb 2018

Day Trip was well organized. but not the Silfra part that was very disorganized. the guides in the lake were unfriendly, we did not feel comfortable and safe. in my experience we were to much people to handle so we did not have good explanation what i consider very important for the succeed.One of the guide tour was complaining to much about customers. the time we have to expand to get the dry clothes is to much not well organize..Everything was in a mess. The place is not the optimus. I have a terrible time and not recommend the tour with lot of people because impossible to have good experience. I have to recognize our guide Kristine was excellent and very helpfully

Amazing tour.....dry suits are a...

Erin D, Oct 2017

Amazing tour.....dry suits are a little bit more difficult to get used to when snorkeling, but beautiful swim and the lava caves were astonishing!

It was cold but it was beautiful! It...

Krystin O, Oct 2017

It was cold but it was beautiful! It felt like we were flying. The visibility is unparalleled and Silfra is stunning.

Not key sites you need to see but...

Hillary G, Sep 2017

Not key sites you need to see but was amazing to rock climb through a lava cave. Took forever to get settled at the snorkeling place and get in the uncomfortable gear, listen to instructions and get into water but as soon as you look under water it was 100% worth it!

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