857-95805 - A blue coloured boiling hot mud pool emanates steam as the sunset colours the sky orange, in Hveraröndor Hverir Geothermal Area at Namaskard Pass, North Iceland.

746-88316 - Geothermal area Hveraroend near lake Myvatn and the ring road during winter with mud pools , fumaroles and solfataras. europe, northern europe, scandinavia, iceland, February

746-88315 - Geothermal area Hveraroend near lake Myvatn and the ring road during winter with mud pools , fumaroles and solfataras. europe, northern europe, scandinavia, iceland, February

746-88317 - Geothermal area Hveraroend near lake Myvatn and the ring road during winter with mud pools , fumaroles and solfataras. europe, northern europe, scandinavia, iceland, February

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

1112-2596 - Furnas Valley, a site of bubbling hot springs and fumaroles on the Azorean capital island of Sao Miguel, Azores, Portugal, Europe

832-368299 - Solfataras, fumaroles, mud pools, sulfur and other minerals, viewing platform, steam, Hveraroend geothermal area, N√°mafjall mountains, M√Ωvatn area, Nor√∞urland eystra, the north-east region, Iceland, Europe

832-368298 - Solfataras, fumaroles, mud pools, sulfur and other minerals, steam, Hveraroend geothermal area, N√°mafjall mountains, M√Ωvatn area, Nor√∞urland eystra, the north-east region, Iceland, Europe

832-368297 - Solfataras, fumaroles, mud pools, sulfur and other minerals, steam, Hveraroend geothermal area, N√°mafjall mountains, M√Ωvatn area, Nor√∞urland eystra, the north-east region, Iceland, Europe

832-259877 - Hot, bubbling mud in a pool in the Gunnuhver geothermal area, Iceland, Europe

1109-858 - Hot bubbling mud pool at Orakei Korako Thermal Park, The Hidden Valley, North Island, New Zealand, Pacific

851-193 - Hot springs and mud pools, Aguas Calientes, Southwest Highlands, Bolivia, South America

911-6898 - Bubbling mud pools and geothermal ground on Krafla mountain near Myvatn, Iceland, Polar Regions

911-6863 - Bubbling mud pools in the geothermal area of Hverir near Myvatn, Northern Iceland, Polar Regions

911-7003 - One of the many bubbling mud pools in a hot spring area on the outskirts of Hveragerdi, a geothermal hot spot, with steam rising from fumeroles right in the middle of town, South West Iceland, Polar Regions

911-7002 - One of the many bubbling mud pools in a hot spring area on the outskirts of Hveragerdi, a geothermal hot spot, with steam rising from fumeroles right in the middle of town, South West Iceland, Polar Regions

911-7004 - One of the many bubbling mud pools in a hot spring area on the outskirts of Hveragerdi, a geothermal hot spot, with steam rising from fumeroles right in the middle of town, South West Iceland, Polar Regions

911-6890 - Bubbling mud pools in the geothermal area of Hverir near Myvatn, Northern Iceland, Polar Regions

911-6887 - Bubbling mud pools in the geothermal area of Hverir near Myvatn, Northern Iceland, Polar Regions

911-6886 - Bubbling mud pools in the geothermal area of Hverir near Myvatn, Northern Iceland, Polar Regions

851-5 - Hot springs and mud pools, Salar de Uyuni, Bolivia, South America

832-7695 - Mud pool in the Namafjall geothermal area at Lake Myvatn in Iceland, Europe

29-5015 - Boiling mud pool, Namafjall geothermal area, near Lake Myvatn, northeast area, Iceland, Polar Regions

698-2112 - Tourists around the hot mud pools at Namaskard thermal area, Hverarond, near Lake Myvatn, North area, Iceland, Polar Regions

698-2111 - Hot pools and boiling mud at Namaskard thermal area, Hverarond, near Lake Myvatn, North area, Iceland, Polar Regions

641-5882 - Steaming volcanic mud pools, Rincon de la Vieja National Park at foot of Rincon Volcano, Gaunacaste, Costa Rica

641-5881 - Steaming volcanic mud pools, Rincon de la Vieja National Park at foot of Rincon Volcano, Gaunacaste, Costa Rica

734-7 - Hot springs and mud pools, Salar de Uyuni, Bolivia, South America

698-2149 - Tourists around the hot mud pools at Namaskard thermal area, Hverarond, near Lake Myvatn, North area, Iceland, Polar Regions

734-8 - Hot springs and mud pools, Salar de Uyuni, Bolivia, South America