Grimsvötn volcano is situated near the centre of the Vatnajökull ice cap in central Iceland and is one of Iceland’s most active volcanoes. It has a complex of calderas and a sub glacial caldera lake sustained by geothermal heat. Small eruptions have occurred at the volcano in 1983 and 1998. In 1996, the Gjálp sub glacial eruption occurred north of the volcano and yet again in the fall of 2004.  The newest eruption was in May 2011 and the staff of Luxury Adventures was there to take photos when the volcano came to a complete stop.