South Iceland Silfra Fissure Snorkeling and Raufarhólshellir Lava Tunnel Tour - SuperSaver Combo
by Arctic Adventures
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This full-day SuperSaver tour in South Iceland lasts about 10 hours and combines two notable geological sites. It begins with a visit to Raufarhólshellir, one of Iceland's longest lava tunnels located approximately 45 minutes from Reykjavík. Participants walk through the tunnel to observe colorful rock formations and volcanic structures formed thousands of years ago. After exploring the lava cave, the tour continues to Þingvellir National Park, a UNESCO World Heritage Site. At Þingvellir, participants snorkel in the Silfra Fissure, a crack between the North American and Eurasian tectonic plates. The snorkeling is guided by a certified divemaster and includes all necessary gear. The water is exceptionally clear, allowing snorkelers to float between the two continental plates while viewing underwater rock formations. After snorkeling, hot chocolate and cookies are provided. The guide takes underwater photos, which are shared with participants. Optional transfers for pickup and dropoff from Reykjavík are available. Lunch is not included but can be brought or purchased during breaks. Participants should bring warm base layers, a towel, a change of clothes, and thick socks for comfort during and after the activities. The minimum age is 12 years, and those under 18 must be accompanied by an adult booked on the same tour. Guests must meet weight and height requirements and be able to swim. Additional safety and medical information is provided before the tour.
Highlights
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Itinerary
This is a combination of our two classic tours: The Lava Tunnel + Snorkeling the Silfra Fissure - the ultimate geological day tour adventure! Explore the lava tunnel & snorkel between tectonic plates in the crystal-clear waters of Silfra. Join both unforgettable experiences with this value-packed combo. Your day begins at The Lava Tunnel, where your expert guide leads you through a vivid underground world shaped by past volcanic eruptions. Equipped with all necessary safety gear, you’ll witness colourful mineral deposits, dramatic rock formations, and learn how Iceland’s unique geology carved this extraordinary cave. Next, continue to Thingvellir National Park, a UNESCO World Heritage Site and home to the famous Silfra Fissure. Here you’ll snorkel between the North American and Eurasian plates in glacial meltwater that has been naturally filtered through lava fields for decades, creating unmatched clarity with visibility reaching 100–150 meters. You can meet us directly at each location or choose the Reykjavík Transfer option for a seamless, no-car-needed experience. We’ll handle pick-up, transport between sites, and drop-off, so you can simply relax and enjoy the adventure.
600 min
Meeting point
Have your own vehicle? The first meeting point is Raufarholshellir Lava Tunnel for your 9:30 tour. Next, meet us in Thingvellir National Park for snorkeling.
End point
Have your own vehicle? The first meeting point is Raufarholshellir Lava Tunnel for your 9:30 tour. Next, meet us in Thingvellir National Park for snorkeling.
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Cancellation policy
- Cancel at least 24 hours before start for a full refund.