The eruption is over - lasted 3-4 hours

The fissure eruption in Holuhraun lava, north of Vatnajökull glacier, which started at midnight, is already over. The eruption lasted for about three or four hours, according to Páll Einarsson, professor geophysics at the University of Iceland.

"It was a small eruption and a small sample of the magma that is moving underground reached the surface," says Páll, describing the events of the night as an aberration in the larger course of events of the last two weeks.