Lómagnúpur, (668 m) a headland which once rose from the sea, now rising from the sands. One of Iceland’s highest perpendicular inland cliffs.

In July 1789 a large part of the south–western side of the cliff collapsed and evidence of this may be seen in the rock to this day.

An avalanche fell on the east side of Lómagnúpur, west of Hellisflái and to the east of Stóragil, in June 1998. This avalanche was on a much smaller scale then the one in 1789.