volcanic landscape of hverir, myvatn geothermal area in iceland

active area boiling cloud crater europe field fissure formation fumes gas geology geothermal hill hot spring hverarond hverir iceland icelandic krafla land landmark landscape mineral mountain mud myvatn natural nature orange outdoor red rock scenic smoke soil solfataras steam stone sulfur sulfuric sulfurous sulphating sulphur tourism tourist travel vapor view volcanic steaming springs rocks