The photos below show the rift valley, graben, in Holuhraun. The two volcanic fissures in Holuhraun are located in the rift, which stretches from underneath Dyngjujökull. The rift is above the dyke that started to thrust from the Bárðarbunga caldera on 16. August 2014.
The rift valley in Holuhraun 3. September 2014. Picture Þorvaldur Þórðarson.
The rift valley in Holuhraun 3. September 2014. Picture Þorvaldur Þórðarson.
Map showing the lava in Holuhraun. Map by Icelandic Met Office.
Picture showing the volcanic eruption in Holuhraun on 5. September. The text reads from left to right: North end of fissure, Baugur (the middle crater), South, The new fissure (that opened on 5. Sept.). Picture Institute of Earth Scienses University of Iceland.