You could either go snorkeling at some warm tropical location, or Silfra, which is located in the Pingvallavatn Lake in Iceland’s Pingvellir National Park. This rift that is part of the divergent tectonic boundary between the North American and Eurasian plates. Scuba diving professionals have divided Silfra into three sections: Silfra hall, Silfra cathedral and Silfra lagoon. At its deepest, Silfra is 63 metres deep but diving this depth is seldom done and only by appropriately qualified advanced divers. Click here for more pictures. Continue reading for two additional videos and information.
In any case, the most wondrous sights are in Silfra cathedral which is a 100 meter long fissure where you can see almost from end to end. The rift offers amazing visibility and has been placed on the world’s top 50 diving destinations by at least one travel site. The visibility reaches 70-80 meters. Diving tour operators however make exaggerated claims of 150-300 meters.