blue lake in hverir myvatn geothermal area with boiling mudpools and steaming fumaroles, iceland

attraction boil cone crater destination energy eruption fumarole geology geothermal heat hot hverarond hverir iceland icelandic island isle krafla lake landmark landscape lava mars mud myvatn namafjall namaskard natural nature pool pot reykjahlid scenery scenic skutustadahreppur smoke steam steaming sulfur sulphur thermal travel vapor vapour volcanic volcano