857-95805 - A blue coloured boiling hot mud pool emanates steam as the sunset colours the sky orange, in Hverarâândor Hverir Geothermal Area at Namaskard Pass, North Iceland.
718-2080 - Bathers enjoying the therapeutic benefits of the volcanic mud in the hot spring pool, Vulcano Island, Aeolian Islands, UNESCO World Heritage Site, north of Sicily, Italy, Mediterranean, Europe