Silfra

64.254722222222 - 21.118888888889Koordinaten: 64 ° 15 ' 17 "N, 21 ° 7' 8 " W

The Silfra column ( by isl. Silfra, Silver Woman ') is a column- shaped warp in Iceland's Þingvellir National Park, which opens into the Þingvallavatn. Has come about due to the drifting apart of the North American plate and the Eurasian plate. It is wider by around 7 mm. Your deepest point is 63 m below sea level.

The column is located in basalt rock and has an extensive cave system on both sides. She is full of water and is fed by the melt waters of the, 50 km away Langjökull. The water takes about 30 to 100 years to flow through the 50 km route through porous lava rock. Through the rock, the water is also filtered perfectly.

Due to the clear water, the Silfra column is a popular dive site - despite a water temperature of only 2-4 ° C. Divers and snorkelers the Silfra column provides not only because of the Lavafeldformationen and the crystal clear water, but also because of their special position: it lies at the interface between the continental plates of America and Europe.