Water activity

Reykjavik Combo Snorkel in Silfra Fissure & Lava Caving

Activity provider: Arctic Adventures
Water activity

Reykjavik Combo Snorkel in Silfra Fissure & Lava Caving

Activity provider: Arctic Adventures
Likely to sell out

From US$ 254.10 per person

Likely to sell out

Explore a hidden underground world in the wilderness of Reykjavik, and witness first hand the magical rock formations left behind by volcanic eruptions. Probe the dark lava tunnels and then snorkel in the unique fissures of Silfra.

About this activity

Free cancellation
Cancel up to 24 hours in advance for a full refund
Reserve now & pay later
Keep your travel plans flexible — book your spot and pay nothing today.
Covid-19 precautions
Special health and safety measures are in place. Check your activity voucher once you book for full details.
Duration 9 hours
Check availability to see starting times.
Live tour guide
Pickup included
Pick up is offered from selected Reykjavik pick up points.


  • Explore the mysterious underworld below one of Iceland‘s many lava fields
  • Snorkel in the crystal clear waters of the Silfra fissure
  • Discover an underground world created by past volcanic activity
  • Float in an otherworldly landscape of various shades of blue
Full description

This full-day combined snorkeling and lava caving adventure tour starts with pickup from Reykjavik. As the conditions in Iceland vary greatly between seasons, visit one of two different lava caves. As you explore the hidden world beneath one of Iceland‘s lava fields, enjoy the opportunity to discover firsthand the marvels created by past volcanic activity.

Accompanied by a certified guide, experience the wonders of the lava tube cave and hear all there is to know about the formation of the cave. Snorkeling in Silfra is your second adventure of this combo tour, although this can vary. Silfra fissure is one of Iceland’s best-kept secrets, an otherworldly scene that is famous for its heavenly shades of blue.

Located in the heart of the historic site of Thingvellir National Park, the crystal-clear water gives you a feeling of being weightless as you float along with the lazy current. During your snorkeling adventure between the tectonic plates, benefit from the accompaniment of a certified snorkeling guide. All necessary gear is provided for this tour.

Please note that you can rent a waterproof digital camera or purchase a waterproof disposable camera directly from the operator to snap unique photos during your black and blue adventure in Iceland that you can then share with your loved ones back home. 

  • Small-group experience
  • Pick-up from Reykjavík
  • Caving and caving gear
  • Snorkeling and snorkeling gear
  • Certified PADI dive guide / Dive-master & an expert caving guide
  • Silfra admission fee
  • Free Wi-Fi On Board
  • Lunch
Not suitable for
  • Children under 12 years
  • Pregnant women
  • People with mobility impairments
  • People with claustrophobia
  • People with heart problems
  • Non-swimmers
  • People with respiratory issues
  • People with epilepsy
  • People with diabetes
  • People under 4 ft 9 in (150 cm)
  • Visually impaired people
  • People under 99 lbs (45 kg)
  • People with pre-existing medical conditions
  • People with high blood pressure

Select participants and date



Important information

What to bring

  • Warm clothing

Know before you go

  • Please bring warm outdoor clothing, waterproof jacket and pants, head-wear, gloves, warm under clothing (fleece or wool sweater and pants), warm socks, a small towel and a change of clothing
  • Good hiking shoes are recommended
  • Hiking shoes and waterproofs can be rented from the operator if notified in advance
  • If you have a bad eyesight, please wear contact lenses or bring your own prescription goggles, as glasses cannot be worn under goggles
  • Due to guide to customer ratio limitations and Thingvellir National Park regulations this tour sells out frequently so book well in advance
  • Unfortunately meeting on location is not an option
  • Participants must be comfortable in the water and able to swim
  • You are unable to participate if you are pregnant, due to the small risk of cold water entering the suit
  • The itinerary can vary in order depending on weather conditions and other related factors
  • Please read the snorkeling handbook before your tour (link to handbook on the voucher)
Customer reviews

Overall rating

4.7 /5

based on 141 reviews

Review summary

  • Guide
  • Transportation
  • Value for money
  • Safety

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We visited the Lave Cave first. Our guide was excellent. She was very friendly and funny, and very knowledgeable. She led us through the tunnel then let us make our own way back so we could explore a bit more and take photos. We were then dropped off at a bakery to have some food and wait for the pickup to go to Silfra. Our guide/driver for this part was also excellent. You get to see some stunning scenery on the drive there. Arriving at Silfra there are lots of items to put on but you are helped through this every step of the way by the guides. Being completely new to snorkeling I discovered it wasn't really for me so I went back to wait for the rest of the group to do the experience. My husband absolutely loved it! You are so well looked after the whole time, everyone really couldn't have been more professional! I would absolutely recommend this combo tour! Thank you so much to the whole team

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November 13, 2022

Our guides were green informative and kind to us. The experience is so special, everything is explaining clearly, you can feel the moment and learn about the different place. For the speleology, the caves were magical. The guide was fun and passionate about the history. I really appreciated the moment of silence, really meditating. The snorkling was really fun, it was my first time and the guides always makes you sure that you are safe and comfortable. The water is really cold but the views are immaculate.

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September 11, 2022

This is a DON'T MISS activity! We weren't cold and the dry suits kept us very comfortable. All of the guides were helpful and Fonsi, our guide, really made us feel like pros in a situation that was not familiar to us. This experience added immensely to our Iceland experience!

July 24, 2022

Product ID: 25953