on the Eastern Volcanic zone and consists of a
central volcano rising to 1490 m.a.s.l. and is about 60 km long fissure swarm.
The volcano
has been highly active during Holocene and
has erupted 23 times in
historical time, with its last eruption occurring in 2000. It is considered the
third most active volcano in Iceland. About 100 eruptions are known from the
system in the past 9000 years, both effusive
/volcanoes/about-volcanoes/hekla/