On this tour, you'll visit a cave called Leiðarendi. The 900-meter-long lava tube offers unique rock formations, such as stalactites and shelves. Some light crawling may be required but overall the Leiðarendi cave has a fairly easy access to the underworld wonders of the Icelandic lava fields.
You will snorkel under the UNESCO World Heritage site, Þingvellir national park at the freshwater fissure Silfra, one of the best diving sites in the world!
Silfra is about 60-63 meters at its deepest. It's is a freshwater fissure and the water is so clear you can almost see end to end. No diving experience is needed as you will snorkel at the surface of the canyon. All snorkeling gear will be provided, and you'll have your choice of a wetsuit or a drysuit.
Duration: 6 hours and 45 minutes