tourists taking pictures at steaming hot sulfur springs of seltun geothermal area, krysuvik, reykjanes peninsula in iceland

taking tourists people basin boiling brown environment europe evaporation geo activity geologic geology geothermal area geothermic ground heat hot spring hydrothermal iceland icelandic krysavik krysuvik mineral mud natural nature outdoor pond pool reykjanes rock seltun smoke steam steaming sulfur springs thermal tourist attractions travel volcanic volcanism volcano water