geothermal area with hot springs on iceland, summer

area boiling cracked crater crust crystals dangerous detail dramatic drought dry energy field fog fumarole gas geology geothermal geysir ground hot hverir iceland icelandic krafla landscape minerals mist mountains multicolored myvatn namafjall namaskard natural nature smell smoke soil solfatare spring steam stinking sulfate sulfur sulphate thermal touristic travel volcanic volcano