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Sapphire Pool, Biscuit Basin, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Excelsior Pool, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Tourists on boardwalk over the mineral runoff from 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
Svartsengi (Blue Lagoon) Geothermal Power Station at sunset, Grindavik, Reykjanes Peninsula, Iceland, Polar Regions
Smoking fumaroles on Mutnovsky volcano, Kamchatka, Russia
Tourist exploring White Island Volcano, an active volcano in the Bay of Plenty, North Island, New Zealand, Pacific
Acid Crater Lake, White Island Volcano, an active volcano in the Bay of Plenty, North Island, New Zealand, Pacific
Pohutu Geyser and Prince of Wales Geyser, Rotorua, North Island, New Zealand, Pacific
Pohutu Geyser and Prince of Wales Geyser, Rotorua, North Island, New Zealand, Pacific
Blue Lagoon Resort, Svartsengi, Iceland, Polar Regions
Pohutu Geyser and Prince of Wales Geyser, Rotorua, North Island, New Zealand, Pacific
White Island (Whakaari) active marine volcano in the Bay of Plenty, North Island, New Zealand, Pacific
Lady Knox Geyser, Wai-O-Tapu Thermal Wonderland, North Island, New Zealand, Pacific
Rainbow Geyser, Rotorua, North Island, New Zealand, Pacific
The crater with active lava lake of Mount Nyiragongo, Virunga National Park, UNESCO World Heritage Site, Democratic Republic of the Congo, Africa
Geothermal activity of mudpots, hot springs and fumaroles, at Krisuvik (Krysuvik-Seltun), Reykjanes Peninsula, south-west Iceland, Iceland, Polar Regions
Mount Naka active crater lake, Mount Aso, Kyushu, Japan, Asia
Mount Naka active crater lake, Mount Aso, Kyushu, Japan, Asia
Boiling mudpools in geothermal area on Reykjanes Peninsula, near Keflavik, Iceland, Polar Regions
Waiotapu thermal area, Rotorua, North Island, New Zealand, Pacific
Tourist at El Tatio Geysers (Geysers del Tatio), the largest geyser field in the Southern Hemisphere, Atacama Desert, Chile, South America
Tourists in hot springs of Termas de Polques on the Altiplano, Potosi Department, Bolivia, South America
Tourists in hot springs of Termas de Polques on the Altiplano, Potosi Department, Bolivia, South America
Hot springs and mud pools, Aguas Calientes, Southwest Highlands, Bolivia, South America
Hot pools and steam from Strokkur Geysir at sunrise, winter, at geothermal area beside the Hvita River, Geysir, Iceland, Polar Regions
Tourists watching geothermal activity of mudpots, hot springs and fumaroles, at Krisuvik (Krysuvik-Seltun), Reykjanes Peninsula, south-west Iceland, Iceland, Polar Regions
Mount Naka active crater lake, Mount Aso, Kyushu, Japan, Asia
Pohutu Geyser, Te Puia, Rotorua, North Island, New Zealand, Pacific
Gunnuhver thermal water site just outside Reykjavik, Iceland, Polar Regions
Strokkur Geyser, Golden Circle tour, Iceland, Polar Regions
Tourists standing by smoking fumaroles on Mutnovsky volcano, Kamchatka, Russia, Eurasia
Oyster Pool, Waiotapu Thermal Area, Rotorua, North Island, New Zealand, Pacific
Old Faithful Geyser erupting in summer evening light, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Strokkur Geysir erupting at sunrise during winter, geothermal area beside the Hvita River, Geysir, Iceland, Polar Regions
Gysers del Tatio (El Tatio geysers), Atacama, Chile, South America
Waiotapu thermal area, Rotorua, North Island, New Zealand, Pacific
Old Faithful Geyser erupting, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Mount Naka active crater lake, Mount Aso, Kyushu, Japan, Asia
Eruption of Castle Geyser with rainbow in the spray, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Geothermal hot spring, Reykjahlid, Iceland, Polar Regions
Tourists standing by smoking fumaroles on Mutnovsky volcano, Kamchatka, Russia, Eurasia
Traditional coffee ceremony in Ethiopia, Africa
Palette Spring, Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Tourists looking at Seismograph and Bluebell pools, West Thumb Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Hot springs of Termas de Polques on the Altiplano, Potosi Department, Bolivia, South America
Visitors at Cistern Spring, Norris Geyser Basin, Yellowstone UNESCO World Heritage Site, Wyoming, United States of America, North America
Palette Spring, Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Riverside Geyser, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Strokkur Geyser, Geysir, The Golden Circle, Iceland, Polar Regions
White Island (Whakaari) active marine volcano in the Bay of Plenty, North Island, New Zealand, Pacific
Old Faithful Geyser erupting in summer evening light, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Riverside Geyser, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Grand Geyser erupting, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Cistern Spring, Norris Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Oblong Geyser, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Minor eruption from Steamboat Geyser, Norris Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Devil's Thumb and Palette Spring, Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Castle Geyser, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Thermal springs, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Castle Geyser, Upper 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
Castle Geyser, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Hot springs of Termas de Polques on the Altiplano, Potosi Department, Bolivia, South America
Strokkur Geysir erupting at sunrise on a freezing winter's morning against the colourful sky, Geysir, Haukardalur Valley, Iceland, Polar Regions
Grand Geyser erupting over sinter terrace, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Tourists on the boardwalk around the Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
El Tatio Geysers, at 4300m above sea level El Tatio is the world's highest geyser field, the area is ringed by volcanoes and fed by 64 geysers, Atacama Desert, Norte Grande, Chile, South America
El Tatio Geysers, at 4300m above sea level El Tatio is the world's highest geyser field, the area is ringed by volcanoes and fed by 64 geysers, Atacama Desert, Norte Grande, Chile, South America
Lone American bison with steaming thermal features in the snow, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Hot volcanic steam rising into monsoon clouds from Kawah Ratu (Queen's Crater) of Mount Tangkuban, Perahu, Bandung, Java, Indonesia, Southeast Asia, Asia
Hot volcanic steam rising into monsoon clouds from Kawah Ratu (Queen's Crater) of Mount Tangkuban, Perahu, Bandung, Java, Indonesia, Southeast Asia, Asia
October 16, 2013 - Nighttime eruption of Kliuchevskoi (Klyuchevskoy) Volcano, Kamchatka, Russia. Ash cloud and lava flow are produced by the activity of the snowcovered conical stratovolcano. Column of steam rises where lava flow is melting glacier.
April 1, 2012 - Lava flowing into Valle del Bove at Mount Etna Volcano, Italy, following paroxysmal eruption.
April 1, 2012 - Nighttime paroxysmal eruption at Mount Etna Volcano, Italy. Steam cloud rising as lava melts snow in Valle del Bove.
January 22, 2011 - Lava Lake in bottom of summit caldera, Nyiragongo Volcano, Democratic Republic of the Congo.
November 2006 - Lava flow during eruption of Mount Etna volcano, Sicily, Italy.
November 2006 - Lava flowing from base of hornito during eruption of Mount Etna volcano, Sicily, Italy.
November 2006 - Boulder rolling in lava flow at dusk during eruption of Mount Etna volcano, Sicily, Italy.
November 2006 - Lava flowing from base of hornito during eruption of Mount Etna volcano, Sicily, Italy.
Aerial view by drone of steam of Ala Lobet (Alol Bet) geyser from above, Semera, Afar Region, Ethiopia, Africa
Hot water and steam spraying out of Ala Lobet (Alol Bet) geyser, Semera, Afar Region, Ethiopia, Africa
Aerial view by drone of Ala Lobet (Alol Bet) geyser erupting, Semera, Afar Region, Ethiopia, Africa
Ala Lobet (Alol Bet) geyser erupting, Semera, Afar Region, Ethiopia, Africa
A view of the boiling mud at Namafjall, Iceland
Geysers El Tatio, Antofagasta Region, Chile, South America
Fumarolas da Lagoa das Furnas, hot springs, Sao Miguel Island, Azores, Portugal, Atlantic, Europe
Fumaroles of Furnas Lake, Island of Sao Miguel, Azores, Portugal, Atlantic, Europe
Steam locomotive on the Nilgiri Mountain Railway, between Ooty and Mettupalayam, Tamil Nadu, India, South Asia
Tourists at the Geysers del Tatio (El Tatio), the third largest geyser field in the world, Andean Central Volcanic Zone, Antofagasta Region, Chile, South America
Pre-dawn light on the Geysers del Tatio (El Tatio), the third largest geyser field in the world, Andean Central Volcanic Zone, Antofagasta Region, Chile, South America
Tourists at the Geysers del Tatio (El Tatio), the third largest geyser field in the world, Andean Central Volcanic Zone, Antofagasta Region, Chile, South America
Pre-dawn light on the Geysers del Tatio (El Tatio), the third largest geyser field in the world, Andean Central Volcanic Zone, Antofagasta Region, Chile, South America
Geysers del Tatio (El Tatio), the third largest geyser field in the world, Andean Central Volcanic Zone, Antofagasta Region, Chile, South America
Geysers del Tatio (El Tatio), the third largest geyser field in the world, Andean Central Volcanic Zone, Antofagasta Region, Chile, South America
Tourists at the Geysers del Tatio (El Tatio), the third largest geyser field in the world, Andean Central Volcanic Zone, Antofagasta Region, Chile, South America
Geysers del Tatio (El Tatio), the third largest geyser field in the world, Andean Central Volcanic Zone, Antofagasta Region, Chile, South America
The cone geyser called Old Faithful erupting, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Steamboat Geyser, the worlds tallest active geyser, steaming in Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
The cone geyser called Old Faithful erupting, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America