Grímsnes

Grímsnes (Icelandic pronunciation: [ˈkrimsˌnɛːs]) is a fissure or crater row volcanic system located in South Iceland, a relatively small volcanic system located SE of Thingvallavatn lake east of an en echelon group of volcanic fields extending across the Reykjanes Peninsula. The elevation at its apex is 214 meters. Tephrochronology approximates the volcano's last eruption as 3500 BC.

Grímsnes
Kerið - One of many volcanic craters within the volcanic system.
Highest point
Elevation	214 metres (702 ft)
Coordinates	64°2′N 20°52′W
Geology
Mountain type	Crater rows
Last eruption	3500 BCE

The individual volcanoes in the area include Kerið, a lake-filled volcanic crater.

The Grímsneshraun lava-fields in the area cover a total of 54 km² (21 sq mi). The largest of these plains is the Seyðishólar-Kerhólahraun field which covers 23.5 km² (9.1 sq mi). Other sizeable plains include the Tjarnarhólahraun field at 11.9 km² (4.6 sq mi), the Kálfshólahraun field at 8.0 km² (3.1 sq mi) and the Álftarhólshraun 6.2 km² (2.4 sq mi). The total volume of lava produced in the lava flows of Grímsnes has been estimated at 1.2 cubic kilometres (0.29 cu mi)