The English name of this 1128 m high mountain is The Obsidian Skerry. It is situated some distance east of the infamous volcano Hekla. It is accessible by 4WD vehicles from the north and south. On a fine day the view from the mountain is excellent. The surroundings of the mountain are a very colourful rhyolite area with many hot springs, steam vents, boiling mud pits and ice caves, where there is geothermal activity under the ice.