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Panoramic aerial view of the active Erta Ale volcano caldera, Danakil Depression, Afar Region, Ethiopia, Africa

Panoramic aerial view of sunset over the active Erta Ale volcano crater, Danakil Depression, Afar Region, Ethiopia, Africa

Aerial view of stone huts on top of majestic Erta Ale volcano, Danakil Depression, Afar Region, Ethiopia, Africa

Moai heads of Easter Island, Rapa Nui National Park, UNESCO World Heritage Site, Easter Island, Chile, South America

Moai heads of Easter Island, Rapa Nui National Park, UNESCO World Heritage Site, Easter Island, Chile, South America

Moai heads of Easter Island, Rapa Nui National Park, UNESCO World Heritage Site, Easter Island, Chile, South America

Moai heads of Easter Island, Rapa Nui National Park, UNESCO World Heritage Site, Easter Island, Chile, South America

Moai heads of Easter Island, Rapa Nui National Park, UNESCO World Heritage Site, Easter Island, Chile, South America

Moai heads of Easter Island, Rapa Nui National Park, UNESCO World Heritage Site, Easter Island, Chile, South America

Moai heads of Easter Island, Rapa Nui National Park, UNESCO World Heritage Site, Easter Island, Chile, South America

Afar man looking down to Erta Ale volcano caldera, Danakil Depression, Afar Region, Ethiopia, Africa

Moai heads of Easter Island, Rapa Nui National Park, UNESCO World Heritage Site, Easter Island, Chile, South America

Moai heads of Easter Island, Rapa Nui National Park, UNESCO World Heritage Site, Easter Island, Chile, South America

Continental drift between North American and Eurasian tectonic plates, Thingvellir National Park, UNESCO, in winter, Western Region, Iceland

view of Volcanoes and the Volcanic landscape with the Atlantic Ocean in the Timanfaya national park in Lanzarote in the Canary Islands, Spain

Volcanic landscape with small plants in the Timanfaya national park in Lanzarote in the Canary Islands, Spain

Montana Arena cone at sunset, one of a chain of volcanoes south of Corralejo, Villaverde, Fuerteventura, Canary Islands, Spain, Europe

View from Calderon Honda crater of lava rock ruins and volcanic cones of the north, Lajares, Fuerteventura, Canary Islands, Spain, Europe

View from Calderon Honda crater of lava rock ruins and volcanic cones of the north, Lajares, Fuerteventura, Canary Islands, Spain, Europe

The Caldera de Gairia volcanic cone looms over this town in the central south, Tiscamanita, Fuerteventura, Canary Islands, Spain, Europe

Lobos Island, a nature reserve and La Caldera volcano, just north of this resort, Corralejo, Fuerteventura, Canary Islands, Spain, Atlantic, Europe

Sol de Manana, a geothermal field in Sur Lipez Province in the Potosi Department, Bolivia, South America

Mount Teide, the third active largest volcano in the world and the tallest mountain in Spain, UNESCO World Heritage Site, Teide, Tenerife, Canary Islands, Spain, Atlantic, Europe

Volcanic landscape of the Masaya caldera, Nicaragua's first national park, with craters and a'a blocky lava, Masaya, Nicaragua, Central America

Sulphur and fumaroles smoke on volcano Gran Cratere, Vulcano Island, Aeolian Islands, UNESCO World Heritage Site, north of Sicily, Italy, Mediterranean, Europe

Sulphur and fumarole smoke on volcano Gran crater, Vulcano Island, Aeolian Islands, UNESCO World Heritage Site, north of Sicily, Italy, Mediterranean, Europe

Geologists taking minerals samples on Gran Cratere (The Great Crater), Vulcano Island, Aeolian Islands, UNESCO World Heritage Site, north of Sicily, Italy, Mediterranean, Europe

Gran Cratere (The Great Crater) and Aeolian Islands view, Vulcano Island, Aeolian Islands, UNESCO World Heritage Site, north of Sicily, Italy, Mediterranean, Europe

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

Volcanic rock souvenirs, Lipari Island, Aeolian Islands, UNESCO World Heritage Site, Sicily, Italy, Mediterranean, Europe

Rock formation of columnar basalt, Devils Postpile National Monument, Mammoth Mountain, California, United States of America, North America

Volcanic rock formations on the shores of White Lake, Tariat district, North Hangay province, Mongolia, Central Asia, Asia

Lake in the Furna do Enxofre, volcanic cave, Caldeira, Graciosa Natural Park, Graciosa Island, Azores, Portugal, Atlantic, Europe

Volcanic tunnel, Caldeira, Graciosa Natural Park, Graciosa Island, Azores, Portugal, Atlantic, Europe

Paisaje Lunar, rock formation, The Moon Landscape, Vilaflor, Tenerife Island, Canary Islands, Spain, Europe

The surfers' paradise and volcanic black sand beach at Piha, showing Lion Rock, a monolith housing many Maori carvings, Auckland area, North Island, New Zealand, Pacific

Civita di Bagnoregio, a medieval town perched on volcanic rock, in the afternoon sun, Lazio, Italy, Europe

Tourists visiting Lava field in Sullivan Bay, Santiago (James) Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

View over Lava field in Sullivan Bay towards Bartolome Island, Santiago (James) Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Face Sculpture in Tuff Rock, Asilo de la Paz, Highlands of Floreana (Charles) Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Rock Labyrinth, Asilo de la Paz, Highlands of Floreana (Charles) Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Face sculpture in Tuff rock, Asilo de la Paz, Highlands of Floreana (Charles) Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Rock Labyrinth, Asilo de la Paz, Highlands of Floreana (Charles) Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Moai heads of Easter Island, Rapa Nui National Park, UNESCO World Heritage Site, Easter Island, Chile, South America

Moai heads of Easter Island, Rapa Nui National Park, UNESCO World Heritage Site, Easter Island, Chile, South America

Moai heads of Easter Island, Rapa Nui National Park, UNESCO World Heritage Site, Easter Island, Chile, South America

Moai heads of Easter Island, Rapa Nui National Park, UNESCO World Heritage Site, Easter Island, Chile, South America

Moai heads of Easter Island, Rapa Nui National Park, UNESCO World Heritage Site, Easter Island, Chile, South America

Moai heads of Easter Island, Rapa Nui National Park, UNESCO World Heritage Site, Easter Island, Chile, South America

Moai heads of Easter Island, Rapa Nui National Park, UNESCO World Heritage Site, Easter Island, Chile, South America

Moai heads of Easter Island, Rapa Nui National Park, UNESCO World Heritage Site, Easter Island, Chile, South America

Moai heads of Easter Island, Rapa Nui National Park, UNESCO World Heritage Site, Easter Island, Chile, South America

Moai heads of Easter Island, Rapa Nui National Park, UNESCO World Heritage Site, Easter Island, Chile, South America

Moai heads of Easter Island, Rapa Nui National Park, UNESCO World Heritage Site, Easter Island, Chile, South America

Moai heads of Easter Island, Rapa Nui National Park, UNESCO World Heritage Site, Easter Island, Chile, South America

Moai heads of Easter Island, Rapa Nui National Park, UNESCO World Heritage Site, Easter Island, Chile, South America

Moai heads of Easter Island, Rapa Nui National Park, UNESCO World Heritage Site, Easter Island, Chile, South America

Moai heads of Easter Island, Rapa Nui National Park, UNESCO World Heritage Site, Easter Island, Chile, South America

Moai heads of Easter Island, Rapa Nui National Park, UNESCO World Heritage Site, Easter Island, Chile, South America

View of Sunset Crater Volcano from the east slope of the Lenox Crater Trail, the dark gray soil is volcanic pumice, Arizona, United States of America, North America

Panorama view of O'Leary Peak on the left and Sunset Crater on the right from the Bonito Lava Field near Flagstaff, Arizona, United States of America, North America

Panorama of the western Bonito Lava Field at Sunset Crater Volcano, Arizona, United States of America, North America

Super Pan view of the Cinder Hills on left and the eastside of Sunset Crater on the right, near Flagstaff, Arizona, United States of America, North America

Burned out tree on the left with Sunset Crater Volcano in the background, near Flagstaff, Arizona, United States of America, North America

View of El Teide Volcano shadow from the summit at sunrise, El Teide National Park, UNESCO World Heritage Site, Tenerife, Canary Islands, Spain, Atlantic, Europe

View of El Teide volcano shadow and full moon from the summit right before the sunrise, El Teide National Park, UNESCO World Heritage Site, Tenerife, Canary Islands, Spain, Atlantic, Europe

Adult Andean fox (Lycalopex culpaeus) near its den in the 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

Geysers del Tatio (El Tatio), the third largest geyser field in the world, Andean Central Volcanic Zone, Antofagasta Region, Chile, South America

Basalt pinnacle and cliffs in English Strait in the South Shetland Islands, Antarctica, Polar Regions

Open tundra and columnar basalt in Brededal, Disko Island, Qeqertarsuaq, Baffin Bay, Greenland, Polar Regions

Hiker in open tundra and columnar basalt in Brededal, Disko Island, Qeqertarsuaq, Baffin Bay, Greenland, Polar Regions