Helgrindur Volcano

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 swarm. The central volcano is heavily eroded and is marked by a ridge of sub-glacially erupted basaltic hyaloclastite peaks, 988 m., no glacial cover, but the Holocene products are small basaltic lava flows. The NW-SE trending fissure swarm is 30 km long and its northwest tip extends offshore. Little is known about eruption frequency.