770-1642 - Hikers exploring the very active hot spring area at Kerlingarfjoll, where Kerlingarfjoll Mountains in the interior are a massif of rhyolitic domes rising to 1477m, Iceland, Polar Regions
698-2304 - Eruption of Castle Geyser, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
698-2302 - Eruption of Castle Geyser with thermophilic bacterica mats in foreground, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
777-1996 - Abyss Pool, West Thumb Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
777-1991 - Abyss Pool, West Thumb Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
777-1990 - Black Pool, West Thumb Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
685-1063 - Kilauea thermal area, Hawaii Volcanoes National Park, UNESCO World Heritage Site, Island of Hawaii (Big Island), Hawaii, United States of America, North America
641-7302 - Hierve el Agua (the water boils), hot springs, water rich in minerals bubbles up from the mountains and pours over edge, Oaxaca, Mexico, North America
641-7301 - Hierve el Agua (the water boils), hot springs, water rich in minerals bubbles up from the mountains and pours over edge, Oaxaca, Mexico, North America
641-7300 - Hierve el Agua (the water boils), hot springs, water rich in minerals bubbles up from the mountains and pours over edge, Oaxaca, Mexico, North America
641-7299 - Hierve el Agua (the water boils), hot springs, water rich in minerals bubbles up from the mountains and pours over edge, Oaxaca, Mexico, North America
641-7298 - Hierve el Agua (the water boils), hot springs, water rich in minerals bubbles up from the mountains and pours over edge, Oaxaca, Mexico, North America
83-9780 - Carved wooden figure, or poupou, replica village, Maori Arts and Crafts Institute, Whakarewarewa thermal and cultural area, Rotorua, South Auckland, North Island, New Zealand, Pacific
83-9781 - Intricate carving in the replica village at the Maori Arts and Crafts Institute, Whakarewarewa thermal and cultural area, Rotorua, North Island, New Zealand, Pacific
485-9458 - Walkway, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America
83-2583 - Geo-thermal power plant in the Svartsengi (Black Field) Area, the Blue lagoon is popular with bathers and good for skin complaints, Svartsengi, Iceland, Polar Regions
485-9500 - Beauty Pool in Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America
485-9516 - Castle Geyser, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America
29-3894 - Castle and Sawmill Geysers in eruption in Old Faithful Geyser Basin in winter, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America
83-9800 - Hot Water Beach on the east coast of the Coromandel Peninsula, where thermal waters rise up from below sand, North Island, New Zealand, Pacific
29-459 - Echinus Geyser, erupts every hour in Norris Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America
197-1592 - Tourists viewing the Morning Glory Pool, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
29-2597 - Travertine calcite deposits, Minerva Terrace, Mammoth Hot Springs and Terraces, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America
29-69 - Blisters measuring about 10 cm across in boiling mud pool, Mud volcano, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America
29-474 - Geothermal steam from geyser vent between eruptions, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America