Snorkeling in bubbling hot springs is usually impossible as the water is far too hot, but the hot springs at the bottom of Lake Kleifarvatn provide us with the opportunity to do just that!  Lake Kleifarvatn is hidden within a stunning volcanic landscape just 30 minutes outside of Reykjavík. Standing at the lake shore and changing into your dry suit, you will probably catch a whiff of the sulfur emitted from nearby hot springs and the total silence will let you forget that you are anywhere near civilization.

The underwater hot springs in lake Kleifarvatn have only recently been discovered and are about a 50 meter swim from the shore.  Upon entering the lake you can see the white and yellow sulfur deposits on the lake floor. When we swim closer, you’ll begin to sense the environent around you changing as you approach the gas emanating from below the lake’s floor.  We’ve heard this sensation described as similar to ‘snorkeling in a glass of Champagne’—the fact that you are snorkeling in a caldera is also impressive enough!

When back on land we will enjoy some refreshments at the shore before moving on to Seltún, a nearby high temperature geothermal area on land. In Seltún we will walk along the boiling mud pots and colorful sulfur deposits. 

We highly recommend that you bring your swimsuit with you. Your next stop after this tour could be the nearby Blue Lagoon or at one of Reykjavík’s local geothermal pools where you can relax in the hot tubs and end the day in traditional Icelandic fashion.

Tour Details


15. May – 30. September


Participants must:

  • have read, signed, and followed directions on the Snorkeling Medical Statement
  • sign our liability release form at the start of the tour
  • be at minimum 150cm tall / maximum 200cm tall
  • be at minimum 45kg / maximum 120kg
  • be minimum 14 years of age on the year
  • be comfortable in water and be able to swim
  • be physically fit
  • be ready to wear a sometimes tight & constricting dry suit
  • be able to communicate in English or have a translator available at all times during the tour
  • not be pregnant

4 hours

Min / Max:

Minimum 2 snorkelers / Maximum of 6 snorkelers per snorkel guide

Please bring:
  • Long underwear
  • Thick socks
  • Suitable clothes for the weather of the day
  • Contact lenses if you wear glasses


  • Guided snorkelling trip in lake Kleifarvatn
  • All necessary snorkelling equipment
  • Hot vegan and gluten-free soup and light refreshments at the lake’s shore
  • Stop at geothermal area Seltún
  • Pick up and drop off in Reykjavík

10:00 pick up in Reykjavík

11:00 meeting at Seltún Geothermal Area parking lot for self drive

Book this tour now!