Þórðarhyrna Volcano

The Þórðarhyrna central volcano has been moderately active during the Holocene, with the last eruption occurring in 1903. It is the second and less active central volcano on the Grímsvötn-Laki volcanic system, located about 20 km SW of the more active Grímsvötn central volcano and connected to it by a subglacial mountain ridge. The central volcano has a diameter of 15 km, rising to 1660 m. It is covered by 100-700 m thick ice within the Vatnajökull glacier.