Hekla, (1,491 m) the most famous volcano in Iceland, a ridge more than 4 km long.
There have been at least 18 eruptions in recorded history, the first in 1104 and the latest in 2000, when scientists were able to predict the eruption half an hour in advance using the alarm system of the Icelandic Meteorological Office.
In the eruption of 1947 the peak rose 50 m.
The easiest climbing route is along the northern ridge.
The first known ascent was made by the explorers Eggert Ólafsson and Bjarni Pálsson in June 20th 1750.