Reykjavík: Raufarhólshellir Lava Tunnel & Silfra Snorkeling

Explore the Raufarhólshellir Lava Tunnel & snorkel the Silfra Fissure on this uniquely Icelandic geological odyssey | Free Underwater Photos & Hot Coco!

Tour Highlights:

• Explore the Raufarhólshellir Lava Tunnel & witness the inner workings of an eruption that occurred over 5000 years ago

• Marvel at the colours & intricate formations within the lava tube and learn about the geological processes that created this underground wonder.

• Snorkel between the separating North American and Eurasian tectonic plates - a geological marvel only found in Silfra

• The Silfra Fissure is located in the stunning Þingvellir National Park, a UNESCO World Heritage Site only 45 minutes from Reykjavík

• Experience the clearest waters in the world! The glacial water originates from Langjökull (Long Glacier) and is naturally filtered through lava fields, resulting in some of the purest water on Earth,with an incredible visibility of up to 150 meters.

Raufarhólshellir Lava Cave

Our adventure starts with the black as we explore the hidden world of the lava field under the Þingvellir National Park. The park is located in the tectonic rift valley between America and Europe and littered with quirky, interesting lava caves. Walking down into a cave and discovering the marvels that volcanic activity has created in the past is a trip that everyone can do. The Raufarhólshellir cave is a perfect example of an Icelandic lava tube and is situated in one of the most active volcano areas in the world. After the cave you have time to grab lunch before moving on into the blue and your second adventure.

Silfra Fissure

Snorkeling in the Silfra fissure is our second adventure. The Silfra fissure is one of Iceland’s best-kept secrets, an otherworldly scene that is world famous for its heavenly shades of blue. Frequently rated as one of the worlds top ten dive sites, the Silfra offers up to 100 meters of underwater visibility. The crystal clear water in the deep fissure gives you a feeling of being weightless as you float down with the lazy current. The snorkeling is a relaxing but exotic trip in an environment most will only encounter in their dreams.

Meeting point

Staying in Reykjavík? We will pick you up! Select your hotel or nearest bus stop from the list. Our first stop is the Lava Tunnel, then we return briefly to the city before heading to Thingvellir National Park. We drive you home after.

If you have any medical conditions, medical approval from a doctor is required.

Please note

• This is a combo of two tours: "Snorkeling in Silfra" and the "Lava Tunnel", including transfer from Reykjavík and back. 

• Guests must read and sign the medical statement form in our Snorkeling Handbook. If you have a lis ted medical condition, approval from a doctor is required.

• Participants need to be comfortable in the water and able to swim

• It is crucial that guests can both understand and communicate in English to participate in the tour

• This tour is not suitable for pregnant people due to the small risk of cold water entering the suit

• Dry suit sizes: Our gear is limited to standard sizes available on the market, and it’s crucial that guests fall within the specified size parameters. This ensures the safety equipment fits properly, keeping you warm and protected in the glacial waters. For your safety and comfort, please confirm that you meet the required sizing guidelines:

  • Weight: 99-265 lbs (45-120 kg)

  • Height: 4'11" - 6'7" (150-200 cm)

• Snorkeling masks cannot accommodate glasses. If you do not have a prescription mask of your own, please arrange to use contact lenses

Participants are responsible for reviewing our Snorkeling Handbook before the tour. The handbook contains important medical and safety information. If guests do not meet the requirements for safe participation, we are unable to accomodate them on the tour.