Tour code: 5590LAVA
Visit Þingvellir National Park for a day of spelunking and snorkeling during this eco-adventure from Reykjavik. On this full-day tour with an expert adventure guide, visit the Silfra fissure and the Gjábakkahellir cave in this UNESCO World Heritage-listed park. Explore some of Iceland's most spectacular natural wonders by snorkeling in an underground pool and climbing into a mysterious cave. All equipment, expert guidance and round-trip transportation Reykjavik hotels are included. 


  • Day trip to the Gjábakkahellir cave and the Silfra fissure from Reykjavik
  • Visit Þingvellir National Park, a UNESCO World Heritage Site
  • Explore the dark, mysterious Gjábakkahellir cave with your expert guide
  • Snorkel in the Silfra fissure and admire the amazing, vibrant depths of underground tectonic plates
  • Hotel pickup and drop-off included

Recent Photos of This Tour

What You Can Expect

Day Trip from Reykjavik: Cave Exploring in Gjábakkahellir and Snorkeling in Silfra

Day Trip from Reykjavik: Caving in Gjabakkahellir and Snorkeling in Silfra

Following pickup at your Reykjavik hotel, climb aboard a comfortable, climate-controlled minbus for the 60-minute journey to the UNESCO World Heritage-listed Þingvellir National Park. 

Upon arrival, listen to a short safety lecture and introduction to the area. Get fitted for spelunking and snorkel gear, then follow your expert guide to your first adventure. 

Explore the lava fields under the park itself by entering Gjábakkahellir cave. View and climb through a textbook example of a lava tube, located in one of the most active volcanic areas in the world. During the 1.5-hour tour of the cave, admire shield volcanoes, products of lava flows that left spectacular layers of rock and lava deposits over the years. Please note: In the winter, you will explore Leiðarendi cave.

Break for lunch (own expense) before continuing on to visit Silfra.

At the Silfra fissure, slip on your snorkeling gear and explore the otherworldly underground pool. Drift between the tectonic plates that separate North America and Eurasia, following your guide to the most scenic places in the pool. 

After a day of exploring the spectacular underground wonders in Þingvellir National Park, head back to Reykjavik for drop-off at your hotel. 

Customer Reviews

Anthony R

5 star rating: Highly Recommended June 2016

Wonderful trip. Great guide Richard

Joy B

5 star rating: Highly Recommended June 2016

I highly recommend this company for this tour. We used other tour companies for the rest of our travel in Iceland and wish we had used these guys for everything. They were friendlier and more knowledgeable than other tour companies we used. Also, the group was small by design so we didn't have the headaches that go along with larger tour groups.

Diane United States of ... 

5 star rating: Highly Recommended June 2016

Amazing day trip! Our tour guide, Oliver, was great! I enjoyed the cave more than I would have expected. Snorkeling was fun too but for all the preparation it takes, it didn't seem like we were in the water all that long. And it was my first time doing that kind of snorkeling so I was a little uncomfortable with all the gear/equipment and worrying about leaks and such. But it worked out quite well. It makes me want to pursue scuba diving! The water was so beautiful. I love being able to say I've been between the North American and Eurasian plates!

Jeffrey W

5 star rating: Highly Recommended June 2016

Excellent guides, excellent views, recommended for those who want to do something outside the mainstream while in Iceland, and the Silfra snorkeling is something you will remember forever.

katherine c

5 star rating: Highly Recommended June 2016

Really wonderful experience. The tour guide was helpful and informative and even added some local stories! The cave was great and not too challenging. Snorkeling was incredible, just be prepared for being stuffed into a dry suit!

Morgane S

5 star rating: Highly Recommended June 2016

Absolutely fantastic. Richard was a fun guide and made us feel very safe both in the dark cave and freezing water!

Gavin B

5 star rating: Highly Recommended May 2016

Such an awesome day out! Rich did an awesome job of guiding us throughout the day and Mike took great care of us in the water.
Snorkelling through the tectonic rift was a beautiful and surreal experience, I'm recommending it to everyone I know going to Iceland.

Hilary W

5 star rating: Highly Recommended April 2016

THIS TRIP WAS AMAZING - from the cave to the silfra - i have never seen water so clear. And yes, it was freezing, but so worth it! Make sure to drink some of the water while snorkling, you can taste how pure it is.

Kate C

5 star rating: Highly Recommended March 2016

Enjoyed both the caving and Silfa, don't miss the chance to experience this once in a lifetime trip.

waalle United States of ... 

5 star rating: Highly Recommended March 2016

The best thing I did in Iceland. These guys were entertaining and knowledgeable. Snorkeling in Silfra was breathtaking. A must do!

From USD $ 206.81

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