cone in hverir geothermal area with boiling mudpools and steaming fumaroles in iceland in summer. myvatn region, north part of

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