Geo-thermal power plant, Svartsengi, Iceland

Geo thermal power plant in Svartsengi (Black Field) area, Iceland

Walkway, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America

Champagne Pool, hot springs, Waiotapu Goethermal Wonderland, Rotorua, New Zealand, Oceania

Champagne Pool, hot springs, Waiotapu Goethermal Wonderland, Rotorua, New Zealand, Oceania

Champagne Pool, hot springs, Waiotapu Goethermal Wonderland, Rotorua, New Zealand, Oceania

Champagne Pool, hot springs, Waiotapu Goethermal Wonderland, Rotorua, New Zealand, Oceania

Champagne Pool, hot springs, Waiotapu Goethermal Wonderland, Rotorua, New Zealand, Oceania

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

Bathing in Blue Lagoon, Svartsenga Geo-Thermal Plant, Iceland, Polar Regions

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

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

Castle Geyser, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America

Krafla geothermal power station, Kroflustod, near Lake Myvatn, North area, Iceland, Polar Regions

The geothermal Krafla Power Station, largest geothermal power station in Iceland, located near the Krafla Volcano, Iceland, Polar Regions

Krafla Geothermal Power Station, the largest in Iceland with a distinctive cooling tower reminiscent of a cheese grater, Krafla, Iceland, Polar Regions

Craters of the Moon thermal power station, Huka, South Auckland, North Island, New Zealand, Pacific

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

The geothermal Krafla Power Station, largest geothermal power station in Iceland, located near the Krafla Volcano, Iceland, Polar Regions

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

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

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

Natural thermal springs Polloquere, salt lake Salar de Surire, national park Reserva Nacional Las Vicunas, Chile, South America

Solfatara field, Namaskard highlands, Iceland, Europe

Natural thermal springs Polloquere, salt lake Salar de Surire, national park Reserva Nacional Las Vicunas, Chile, South America

Geothermal power plant borefield. Waitakei, New Zealand.

Woman relaxing on the rocks surrounding the hot springs at Trafalgar Falls enjoying the atmosphere of the lush rainforest on the Caribbean Island of Dominica in Morne Trois Pitons National Park, Dominica, Caribbean

Woman enjoying soaking in the warm water, hot springs at Trafalgar Falls in the lush rainforest on the Caribbean Island of Dominica in Morne Trois Pitons National Park, Dominica, Caribbean

Stunning aerial view of the turquoise blue water creating a dynamic contrast with the moss covered lava fields along the coast of Southern Iceland, Blue Lagoon, South Iceland, Iceland