Bardarbunga Erupts – Friday, Aug. 29

Steam and smoke rise over a 1-km-long fissure in a lava field north of the Vatnajokull glacier, which covers part of Bardarbunga volcano system, Aug. 29, 2014.

Magma along the fissure, Aug. 29, 2014.

Steam and smoke rise over the fissure at the tip of a magma dyke around 40 km from the main Bardarbunga crater, Aug. 29, 2014

Volcanic activity subsided to relatively low levels after peaking between 0020 and 0200 GMT, Iceland Met Office seismologist Martin Hensch said. Aug. 29, 2014.

Iceland's Meteorological Office on Friday downgraded its volcano alert level to orange from red and said a small eruption that started during the night is not a threat to aviation. Aug. 29, 2014.

A sign is posted on the road next to Bardarbunga, Aug. 23, 2014.