Black & Blue - Lava Tunnel + Silfra Snorkeling from Reykjavík

About this experience

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. 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. To participate in the tour, you must read our Snorkeling Handbook. If you have any medical conditions, medical approval from a doctor is required.