The Helgrindur volcanic system on the Snæfellsnes Volcanic Zone has been weakly active in the Holocene, only producing two small basaltic lava flows that are more than 1100 years old. The Helgrindur system consists of a central volcano and fissure…

The Snæfellsjökull volcanic system has been moderately active in the Holocene. The last eruption was a small basaltic eruption less than 1800 years ago, the lava covering about 4.5 km2. The 30 km long and up to 20 km wide volcanic system lies on the…