solfatare mudpot s in the geothermal area hverir, iceland. the area around the boiling mud is multicolored and cracked

area boil boiling bubble colorful contrast cracked crater crystals dangerous detail drought eruption explode explosion field freeze fumarole fume gas geology geothermal grain gray ground hell hole hot hverir iceland krafla landscape liquid minerals mud mudpot multicolored myvatn nature outdoor pot sculpture smell soil solfatare splash steam stinking sulfur texture thermal tourism touristic travel vivid volcanic volcano