Silfra in Þingvellir is a dive site highly ranked in several dive magazines and forums for decades. The water is pristine, clear groundwater streaming into the lava ravine where you hover between the continental plates. The underground water streams have travelled through the lava for decades before coming into the ravine, where you can slowly drift through and enjoy visibility that is as good as it can be. In fact, your visibility will not be limited by sediments and particles but by the landscape itself: the continental plate edges. The water is cold at 4° C, and you will wear a dry suit.

Þingvellir National Park is interesting from many perspectives, history, geology and ecology to name three. Þingvellir plays major role in the history of Iceland and is in fact a cultural treasure on global level concerning history of democracy as such. The name Þingvellir, or Assembly Plains, is a refferal to the old parliament established there already around in 930, during a era when Europe was a continent of monarchs. In July 2004 Þingvellir was inscripted by UNECO as a world heritage site of cultural importance.