iceland landscape hveravellir geothermal area, area of fumaroles, and multicoloured hot pools, iceland

area beautiful blue boil contrast cracked crater dangerous dramatic energy european extreme fumarole gas geography geothermal geyser heat hole hot hveravellir iceland icelandic isolation kjolur leisure mud multicolored nature power reserve scandinavia silica sky smell smoke soil solfatare spring steam stinking strange sulfur surface terrain thermal vent volcanic volcano water