The Silfra fissure, in the Pingvallavatn valley, uniquely offering scuba-diving between the N American and Euroasian tectonic plates is in?
Silfra Silfra Silfra is a rift formed in the divergent tectonic boundary between the North American and Eurasian plates and is located in the Þingvallavatn Lake in the Þingvellir National Park in Iceland. Silfra lies in the Þingvellir valley and within the Þingvellir National Park. The valley, and Silfra itself, were formed by the divergent tectonic drift of the Eurasian and North American plates. The plates drift about farther apart every year, building up tension between the plates and the earth mass above. This tension is relieved through periodic major earthquakes at approximately ten year intervals, which have caused cracks and
Cave diving the tunnels; they must have dive insurance that covers cave diving; and they must have air supplied in the form of double tanks, stages or a rebreather. In addition, each dive is accompanied by a guide, to minimize the risk of a wrong turn. Silfra is a fissure between the North American and Eurasian tectonic plates in Thingvellir National Park. It is the only place in the world where you can dive or snorkel directly in a crack between two tectonic plates. The tunnel from the entrance of Silfra to the cave is commonly known as ‘The Tunnel’, due to