Lava Tunnel Caving & Snorkeling in Silfra with Transfer | Free Photos

Badge of ExcellenceReykjavik, Iceland
Likely to Sell Out

From $249.00

Select Date and Travelers

Free cancellation
Up to 24 hours in advance.
  • 6 to 7 hours (approx.)
  • Hotel pickup offered
  • Mobile ticket
  • Offered in: English


Go caving in a lava tube and snorkeling in a fissure between two tectonic plates on this adventure through Iceland’s lava fields. Perfect for nature enthusiasts who want to maximize their time in Iceland, this tour combines two outdoor adventures in one excursion. Plus, pickup and drop-off from Reykjavik hotels and the Reykjavik Domestic Airport mean you don’t have to worry about renting a car.
  • Explore Leidarendi Cave and the Silfra fissure in Thingvellir National Park
  • Take home underwater photos of your snorkeling trip
  • A small group tour ensures individual attention from the guide
  • Warm up with hot chocolate after snorkeling

What's Included

  • Underwater photos
  • PADI Divemaster/ Instructor as a guide
  • Hot chocolate after snorkeling
  • Use of Snorkeling equipment
  • Caving helmet and head torch
  • Pick up and drop off in Reykjavik
  • Food and drinks
  • Clothing suitable for the weather; waterproofs (it can be wet in the cave)
  • Boots with ankle support

Meeting And Pickup

Pickup points

Select a pickup point

Start time

08:00 AM

Pickup details

Our pickup can take up to 30 minutes 08:00 tour pick up between: 7:45 - 8:15 09:00 tour pick up between: 8:45 - 9:15 Reykjavik downtown official Tour Bus Stops : - Tour Bus Stop 1, Ráðhúsið - City Hall, Vonarstraeti (64.146316,-21.941491) - Tour Bus Stop 2, Tjörnin - The Pond, Maedragardur on Laekjargata (64.145763,-21.938547) - Tour Bus Stop 3, Lækjargata, Laekjargata 4 (64.14678,-21.937296) - Tour Bus Stop 4, Miðbakki, parking lot by Geirsgata (64.150278,-21.9405) - Tour Bus Stop 5, Harpa, Austurbakki 2 (64.14678,-21.937296) - Tour Bus Stop 6, The Culture House, Hverfisgata 15 by Arnarholl (64.147454,-21.932894) - Tour Bus Stop 7, Traðarkot, Hverfisgata 20 (64.146706,-21.930425) - Tour Bus Stop 8, Hallgrímskirkja, by Eiriksgata (64.141548,-21.927973) - Tour Bus Stop 9, Snorrabraut, Snorrabraut 24 (64.143497,-21.916289) - Tour Bus Stop 11, Austurbær, Snorrabraut 37 (64.142364,-21.917228) - Tour Bus Stop 12, Höfðatorg, Þórunnartún 6 (64.144389,-21.910327) - Tour Bus Stop 13, Rauðarárstígur, Laugavegur 120 (64.142658,-21.913866) More locations we also offer pick up service from: - Perlan Museum - Klambratún parking lot - Mjódd / Olís gas station - BSI Bus Terminal - front / taxi side - Sport Hostel - Glaesibær / Álfheimar - Kringlan - Orkan gas station / Joey & The Juice - Ártún - Orkan gas station / Vesturlandsvegur, direction out of town

What To Expect

Additional Info

  • Confirmation will be received at time of booking
  • Not wheelchair accessible
  • Not recommended for travelers with back problems
  • Not recommended for pregnant travelers
  • No heart problems or other serious medical conditions
  • All participants must know how to swim and be comfortable in water
  • A maximum of 6 people per guide snorkeling and 8 participants for caving
  • All participants must be able to communicate in English
  • Please note that that dry suits can sometimes feel quite tight and constricting, especially around the neck and wrists
  • Minimum age is 14 years, please reach out regarding younger participants & Participants over the age of 65 need to get a physicians approval
  • Be at minimum 145cm (4’9) tall / maximum 200cm (6’7) tall, and be at minimum 45kg (99 lbs) / maximum 120kg (264 lbs)
  • Don't wear glasses, instead bring contact lenses or your own prescription mask (if you have one)
  • Recommended to bring a change of clothes (the drysuit has a very small chance of leaking)
  • If you opt for the wetsuit option you need to bring swimwear and a towel, we recommend reading the wetsuit option so you know what to expect
  • All participants heights, weights and age must be provided to local operator. If you do not provide at time of booking, please contact supplier immediately after booking to provide this information
  • All participants will need to fill out a medical form before participating in the tour. Please contact local operator in order to request the form via email.
  • Please dress according to weather - no heals or jeans
  • Most travelers can participate
  • Not recommended for people with claustrophobia
  • Travelers should be comfortable with crawling through some tight/ low areas
  • This tour/activity will have a maximum of 8 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

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23 reviews
Total review count and overall rating based on Viator and Tripadvisor reviews
Reviews by Viator travelers.
Showing 1-7 of 23 reviews
Must do activity
Fran_W, Jan 2022
Great to combine activities especially if you don’t have a car. Lava cave is interesting and the lava fields it is under are also impressive. Silfra looks like not much more than a ditch from above and on a dull and snowy day I was sceptical. Put your head under the water and you immediately forget about all the hassle of getting kitted up . Crystal clear water and beautiful rock formations . Definitely worth the effort and the cold hands and face. Adventure Vikings very good professional company with friendly, helpful and informative guides
Once in a lifetime experience
Matthew_W, Dec 2021
One of the best things I've ever done. Once you're in the water in a dry suit, you don't feel the cold at all. I was very worried about swimming and trying to stay afloat, but the dry suit takes care all of that, you just have to keep calm and enjoy the view. Our snorkeling guides, Vero and Chicco were excellent and funny and such great company. There was another chap from Mexico, I can't remember his name, and he was wonderful as well. What a great experience! The lava caves were breathtaking and an experience I'll never forget.
Best in the land of Fire and Ice
Kailie_K, Oct 2021
Absolutely amazing experience. The lava cave was beautiful as were the mountains around it. The guide “B” was funny, helpful and full of information. The snorkeling was unbelievable. Both Luis and Alberto were fantastic guides. They were charming, funny, and very helpful/professional. You have the option of a wet or dry suit and they do a great job explaining both and getting you suited up. Once in the water, it is breathtaking and the length of time is perfect! Once in a lifetime tour
Great choice!!
Elaine_H, Aug 2021
Lava Caving was wonderful . Our guide was patient, prompt, he loved to share his enthusiasm for caving. Sadly we were unable to take part in snorkeling. We unaware of requirement for Dr's ok over age 65. Please make sure ALL travel sites emphasize in their description. 😎 All in all A+
Cave and snorkel Tour
lawrence_m, Jun 2021
This tour was great! Easy and fun the whole time. Tour guides were hella awesome too ! The views you get while snorkeling is like no other !
Fantastic and intimate
Tyler_H, Nov 2019
Ivan led us on a stunningly personal and thorough tour of the cave and snorkeling. He was warm, courteous, patient, and funny. When my wife experienced some anxiety about tight spaces, he made her feel v comfortable.
Silfra snorkeling
Andrew P, Nov 2019
Lava caving portion was canceled due to weather but was fully refunded. Was disappointed but can't do anything about the weather. The Silfra snorkeling however was awesome & our group leader Adam was super. He was funny & knowledgeable, made sure everyone was suited up & comfortable before going in to the water. Water was very clear for viewing & though cold wasn't too noticeable once in the water since you're suited up heavily. Overall great experience & would highly recommend!