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74 results found

Morning Glory Pool, a geothermal pool, colours are due to algae at temperature bands, hotter below, Yellowstone National Park, Wyoming, USA

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

Mud pots, fumaroles and dormant Volcan Santa Clara at the San Jacinto volcanic thermal area north of Leon, Leon, Nicaragua, Central America

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

Blue water in geothermal pool with water spout from Strokkur Geysir visible in the distance, Geysir, near Reykjavik, Iceland, Polar Regions

Turquoise Pool, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Porcelain Basin, Norris Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Firehole Spring, Firehole Lake Drive, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Pool runoff of orange bacteria and algae (Therophiles), Grand Prismatic Pool, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Hot pools and steam from Strokkur Geysir at sunrise, winter, at geothermal area beside the Hvita River, Geysir, Iceland, Polar Regions

The Champagne pool, Wai-o-tapu Thermal Wonderland, geothermal area, Waiotapu, Rotorua, North Island, New Zealand, Pacific

The Champagne Pool, Wai-o-tapu Thermal Wonderland, geothermal area, Waiotapu, Rotorua, North Island, New Zealand, Pacific

Morning Glory Pool in Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Very green acid crater in the Wai-O-Tapu Thermal Wonderland, Waiotapu, North Island, New Zealand, Pacific

Excelsior Geyser Crater, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Hot pools and steam from Strokkur Geysir at sunrise, winter, at geothermal area beside the Hvita River, Geysir, Iceland, Polar Regions

Solfataras and boiling mud pools, Namafjall, Krafla geothermal area, near Myvatn, N E Iceland, Polar Regions

Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Porcelain Springs, Norris Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Daisy Geyser, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

A thermal mud pool bubbles near to Wai-o-tapu Thermal Wonderland, Rotorua, North Island, New Zealand, Pacific

Belgian Pool, in the Norris Geyser Basin area, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Belgian Pool, in the Norris Geyser Basin area, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Natural pool of boiling water, geothermal area, Te Puia, Gisborne District, North Island, New Zealand, Pacific

November 2007 - Orange coloration in Champagne Pool hot spring, Wai-O-Tapu Geothermal area, Taupo Volcanic Zone, New Zealand.

Cliff Geyser erupting in the Black Sand Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

September 12, 2009 - Chromatic Pool Hot Spring, Upper Geyser Basin geothermal area, Yellowstone Caldera, Yellowstone National Park, Wyoming.

September 12, 2009 - Morning Glory Pool Hot Spring, Upper Geyser Basin geothermal area, Yellowstone Caldera, Yellowstone National Park, Wyoming.

September 12, 2009 - Morning Glory Pool Hot Spring, Upper Geyser Basin geothermal area, Yellowstone Caldera, Yellowstone National Park, Wyoming.

September 12, 2009 - Morning Glory Pool Hot Spring, Upper Geyser Basin geothermal area, Yellowstone Caldera, Yellowstone National Park, Wyoming.

September 12, 2009 - Chromatic Pool Hot Spring, Upper Geyser Basin geothermal area, Yellowstone Caldera, Yellowstone National Park, Wyoming.

November 2007 - Champagne Pool hot spring, Wai-O-Tapu Geothermal area, Taupo Volcanic Zone, New Zealand.

November 2007 - Bubbles rising in Champagne Pool hot spring, Wai-O-Tapu Geothermal area, Taupo Volcanic Zone, New Zealand.

November 2007 - Champagne Pool and Artist's Palette, Wai-O-Tapu Geothermal area, Taupo Volcanic Zone, New Zealand.

Colourful Emerald Pool, Black Sand Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Steam rising from geothermal pools at sunrise in winter, Geysir, Haukardalur Valley, Iceland, Polar Regions

Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Crested Pool, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Steam rising from geothermal pools at sunrise in winter, Geysir, Haukardalur Valley, Iceland, Polar Regions

Boiling mud pools and stream at Seltun, part of the Krysuvik goethermal area on the Reykjanes Peninsula, Iceland, Polar Regions

Opalescent pool in the Black Sand Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Steaming pools, geothermal area and hot springs at Seltun Hot Springs, Krysuvik, The Capital Region, Iceland

Travertine terraces in Mammoth hot springs terraces, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Champagne Pools steaming, Waiotapu thermal reserves, Rotorua, South Auckland, North Island, New Zealand, Pacific

Champagne Pools steaming, Waiotapu thermal reserve, Rotorua, South Auckland, North Island, New Zealand, Pacific

Steam and bubbling mud pools in thermal area, Rotorua, South Auckland, North Island, New Zealand, Pacific

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

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

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