Gerduberg is around 500 meters long basalt column cliff. They are mostly twelve to fourteen meters high and about one and a half meters in diameter.
Basalt is a volcanic rock formed from the rapid cooling of basaltic lava exposed at the surface. Basalt columns forms during the cooling process of a thick lava flow. Slower the cooling of lava is – larger columns occurs. Most of the columns are hexagonal.
Finding place – EASY
Distance from Reykjavik – 120 km.
Fees – 1000 ISK (Crossing Hvalfjördur Tunnel)