Imagine a large fissure filled up with icy, but crystal clear water, having a visibility of 50 meters and more, no suspended plankton, water just like the air around you. This is Silfra!
The sensational experience while diving in Silfra is just outstanding. The first part of the fissure is characterized by a deep cave leading under the road. The following part is divided by several deep ponds that are connected by tunnels in between the lava rocks. Even more impressive are the deep canyons that go down to 59 meters. From the bottom, the bubbles are searching their way up to the surface, disappearing in the intense blue filtred sunlight breaking the surface.
The landscape is marked geographically by a huge depression between two rifts running northeast. As the two main continental tectonic plates are drifting here apart (2 cm per year), the rift valley is constantly sinking. The result of this geological phenomenon is the lake Žingvallavatn - the largest natural lake in Iceland.
