mudpool with colorful sulfuric earth in a geothermal area in iceland

volcanic vent vapor undefined terrain surreal sulphur sulphating sulfur sulfide steaming steam soil smouldering smoke smell simmering scalding sand rotten rock pots pot pool natural myvatn mud mineral landscape iceland hydrogen hot hole hissing heat grey geothermal geology gas fumarole fissure environment energy eggs earth danger crust crack colors colorful bubble boiling area activity wave water stream shore sea river rapid ocean mudflat geyser coast beach asphalt