Do what few have done before and float on top of the Devil’s Jacuzzi, on this amazing geothermal snorkeling tour. 

Snorkeling in bubbling hot springs is usually impossible as the water is far too hot! The underwater hot springs at the bottom of Lake Kleifarvatn provide us with the opportunity to get as close as we can get, snorkeling among the gas bubbles and warm water. Lake Kleifarvatn is hidden within a stunning volcanic landscape just 30 minutes outside of Reykjavik. 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 environment 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 Seltun geothermal area. In Seltun we will walk along the boiling mud pots and colorful sulfur deposits. We will then make our way back to Reykjavik.

We highly recommend that you bring your swimsuit with you as we can drop you off at one of Reykjavik’s local geothermal pools, where you can relax in the hot tubs and end the day in traditional Icelandic fashion.

This doesn’t quite strike your fancy? Then perhaps these alternatives are more up your alley:

Duration: 5 hours
April – September
Meeting time:
11.00 at Seltún Geothermal area parking lot
Guided snorkeling trip at Kleifarvatn, all necessary snorkeling equipment, hot vegan & gluten free soup, sight seeing stop at Seltun geothermal area
Bring with you: Long underwear, thick socks, suitable clothes for the weather of the day, contact lenses if you wear glasses

Participants must:

  • have read and signed the Snorkeling Silfra Medical Statement (see above booking engine)
  • sign our liability release form at the start of the tour
  • be at least 150cm tall
  • be at minimum 45kg / maximum 120kg
  • be at least 16 years of age
  • 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
  • not be pregnant

This tour can change depending on weather conditions, so this tour needs to be flexible. We are concerned about your safety. 

Get ready for the action and don’t forget your sense of adventure!


Before booking

Please read and sign the Medical statement and bring it with you, or  e-mail it to us.

NOTE that all participants age 60 or older AND all participants under a doctor’s care for any ongoing medical condition must receive a doctor’s clearance for this tour. The medical form to bring to your doctor can be viewed and downloaded HERE.


You can also book this as a diving tour! Just contact us for more information.

Want to book this as a private tour?

Just click the button to the side to contact us.

Check out this video from tour and see for yourself how amazing it is to swim among the geothermal power!