fumarole in hverarönd geothermal field, iceland

acid active activity boil boiling brown caldera clouds color colorful colors crater desert energy erupting eruption europe explosion field fumarola fumarole fumaroles gas geological geology geothermal geothermic heat hell hot hverarond iceland icelandic island krafla land landmark landscape lava mineral mountain mud myvatn namafjall nature orange outdoors power pressure rock scenery scenic sky smell smoke solfatara steam steaming sulfur thermal tourism travel vapor volcanic volcano