zone of hydrothermal activity between the glassier and mountain slope in kverkfjoll massif

ash austurland black blue cinder cold crack crevice cyan day dyngjujokkull eastern europe extreme fissure fljotsdalsherad fracture frost glacier highlands horizon hydrothermal ice iceland icelandic icy kverkfjoll national nature nordic northern park pattern rock snow sudur surface terrain tingeyjarsysla vatnajokull volcanic water