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View along volcanic cliffs towards distant Fira, Imerovigli, Santorini (Thira) (Thera), Cyclades Islands, South Aegean, Greek Islands, Greece, Europe
The colourful multi hued Champagne Pool, Wai-O-Tapu Thermal Wonderland, Waiotapu, North Island, New Zealand, Pacific
View from Mount Ruapehu of Mount Ngauruhoe with a ski cottage in the foreground, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific
Woman on Mount Ruapehu looking towards Mount Ngauruhoe, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific
Aerial of a tuquoise crater lake on top of Mount Ruapehu, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific
Aerial of Mount Ngauruhoe, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific
Ski cottage on Mount Ruapehu, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific
Ski cottage on Mount Ruapehu, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific
Volcanic cone and Situ Cangkuang lake by this village, known for its Hindu temple, Kampung Pulo, Garut, West Java, Indonesia, Southeast Asia, Asia
Wreckage of a United States Navy Douglas Super DC-3 that crashed on the black beach at Solheimasandur, South Region, Iceland, Polar Regions
Fagrifoss waterfall on the slopes of Laki crater, Lakagigar, highlands region, Iceland, Polar Regions
Glowing active volcanic crater of Volcan Telica on a starry night, with the Milky Way, Orion and the Pleiades, Leon, Nicaragua, Central America
Glowing active 700m wide volcanic crater of Volcan Telica with lava vents far below, in the North West volcanic chain, Leon, Nicaragua, Central America
Smoking 700m wide crater of Volcan Telica in the North West volcano chain, one of the country's most active volcanoes, Leon, Nicaragua, Central America
Tourists looking into the crater and view from the rim into the crater of Ranu Kau, Rapa Nui (Easter Island), Chile, South America
Icebergs at sunrise on Jokulsarlon Beach, a black volcanic sand beach in South East Iceland, Iceland, Polar Regions
Majestic night sky with Milky Way over a serene mountain landscape in the Teide National Park, UNESCO World Heritage Site, Tenerife, Canary Islands, Spain, Atlantic, Europe
Hverfjall volcano crater at sunset, Myvatn, Iceland, Polar Regions
Icebergs at sunset on Jokulsarlon Beach, a black volcanic sand beach in South East Iceland, Iceland, Polar Regions
Summit of 1745m active Volcan San Cristobal on left, the country's highest volcano, and Volcan Casita on the right, Chinandega, Nicaragua, Central America
Summit of active Volcan San Cristobal, 1745m, in the North West volcano chain, the country's highest volcano, Chinandega, Nicaragua, Central America
Kawah Ijen and its turquoise acid crater lake, Java, Indonesia, Southeast Asia, Asia
Cacti on Isla de los Pescadores, Volcan Tunupa and the salt flats, Salar de Uyuni, Southwest Highlands, Bolivia, South America
Glowing active volcanic crater of Volcan Telica at night with star trails and shooting star (meteor) on right, Leon, Nicaragua, Central America
A colourful sunset from Sutton Bank thanks to the build up of volcanic ash from Iceland, North Yorkshire, Yorkshire, England, United Kingdom, Europe
The North West volcanic chain, distant on left Momotombo, centre Rota and Las Pilas complex, on right Momotombito and Santa Clara, Leon, Nicaragua, Central America
Fields north of Leon and Volcan Telica, one of the country's most active volcanoes, in the North West volcanic chain, Leon, Nicaragua, Central America
Fields north of Leon and Volcan Telica, one of the country's most active volcanoes, in the North West volcanic chain, Leon, Nicaragua, Central America
Bromo volcano crater on Java, Indonesia, Southeast Asia, Asia
Natural pinnacles in volcanic ash, Zemi Valley, Goreme, UNESCO World Heritage Site, Cappadocia, Anatolia, Turkey, Asia Minor, Eurasia
Natural pinnacles in volcanic ash, Zemi Valley, Goreme, UNESCO World Heritage Site, Cappadocia, Anatolia, Turkey, Asia Minor, Eurasia
Volcanic plateau of Sierra Tarahumara, above Copper Canyon, Chihuahua, Mexico, North America
Icebergs on a black sand volcanic beach next to the Jokulsarlon glacial lake in Vatnajokull National Park in southeast Iceland, Polar Regions
Antarctic fur seals (Arctocephalus gazella) and a huge Chinstrap penguin colony (Pygoscelis antarctica) on a black volcanic beach, Saunders Island, South Sandwich Islands, Antarctica, Polar Regions
The volcanic mountain chain of the Virunga National Park after the rain, UNESCO World Heritage Site, Democratic Republic of the Congo, Africa
Tourists walking through lava field around the very active Erta Ale shield volcano, Danakil depression, Ethiopia, Africa
Black volcanic sand on six mile beach near Limbe, southern Cameroon, Africa
Views of natural volcanic pools called Biscoitos, Terceira Island, Azores, Portugal, Atlantic, Europe
Views of natural volcanic pools called Biscoitos, Terceira Island, Azores, Portugal, Atlantic, Europe
Old lighthouse in the volcanic landscape of Iceland near Akranes, the ninth most populous city in the country, Iceland, Polar Regions
Aerial view of Hnausapollur (Blahylur), a volcanic crater near Landmannalaugar, Fjallabak Nature Reserve, Southern Region, Iceland, Polar Regions
Close-up of plant, Cueva de Los Verdes, cave tourist attraction in lava pipe tunnel, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Wai-O-Tapu Thermal Wonderland, Rotorua, North Island New Zealand, Pacific
Wai-O-Tapu Thermal Wonderland, Rotorua, North Island New Zealand, Pacific
Panorama of sulphur worker appearing out of toxic fumes at Kawah Ijen volcano, East Java, Indonesia, Southeast Asia, Asia
Batak Houses at Lake Toba (Danau Toba), the largest volcanic lake in the world, North Sumatra, Indonesia, Southeast Asia, Asia
Diverging plates in a volcanic fissure zone, Myvatn, Iceland, Polar Regions
Volcanic beach below Volcano Tavurvur, Rabaul, East New Britain, Papua New Guinea, Pacific
Multi coloured geothermal river in the Waimangu Volcanic Valley, North Island, New Zealand, Pacific
Volcanic beach in front of the glacier ice of Deception Island, South Shetland Islands, Antarctica, Polar Regions
Hikers out on the Atacama Salt Flats, with snow-capped volcanic peaks in the background, near San Pedro de Atacama, Chile, South America
Smoking geothermal acitve field in the Waimangu Volcanic Valley, North Island, New Zealand, Pacific
Road leading to Mount Ngauruhoe, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific
Volcanic desert landscape and its fabulous geographical structures caught in evening light, Goreme, Cappadocia, Anatolia, Turkey, Asia Minor, Eurasia
Goreme, UNESCO World Heritage Site, Cappadocia, Anatolia, Turkey, Asia Minor, Eurasia
Cacti on Isla de los Pescadores, Volcan Tunupa and the salt flats, Salar de Uyuni, Southwest Highlands, Bolivia, South America
Selime, Ihlara, western Cappadocia, Anatolia, Turkey, Asia Minor, Eurasia
Volcanic plateau of Sierra Tarahumara, above Copper Canyon, Chihuahua, Mexico, North America
Aerial of Lalolalo lake volcanic crater lake, center of Wallis, Wallis and Futuna, South Pacific, Pacific
The volcanic mountain chain of the Virunga National Park, UNESCO World Heritage Site, Democratic Republic of the Congo, Africa
Volcanic cones, palm trees and lake in rural area near Kampung Pulo, Kecamatan Leles, Garut, West Java, Java, Indonesia, Southeast Asia, Asia
Solfatara, volcanic crater with active fumaroles, Pozzuoli, Naples, Campania, Italy, Europe
Lake Helen and Mount Lassen, 3187 meters, in the background, Lassen Volcanic National Park, California, United States of America, North America
The town of Orchisar, showing the old tunneled houses dug into the volcanic rock, Cappadocia, Anatolia, Turkey, Asia Minor, Eurasia
Pinnacles of volcanic ash, Urgup, UNESCO World Heritage Site, Cappadocia, Anatolia, Turkey, Asia Minor, Eurasia
Glassy pieces of ice on volcanic black sand beach with blurred waves, near Jokulsarlon Lagoon, South Iceland, Polar Regions
Interesting volcanic rock formations surrounding the town of Hanavave, Fatu Hiva, Marquesas, French Polynesia, South Pacific, Pacific
Multi-coloured crater lakes at summit of Kelimutu volcano, eastern Flores, Nusa Tenggara, Indonesia, Southeast Asia, Asia
Multi-coloured crater lakes at summit of Kelimutu volcano, eastern Flores, Nusa Tenggara, Indonesia, Southeast Asia, Asia
Mount Bromo volcano erupting at sunrise, sending volcanic ash high into the sky, East Java, Indonesia, Southeast Asia, Asia
Uchisar, Cappadocia, Anatolia, Turkey, Asia Minor, Eurasia
Wai-O-Tapu Thermal Wonderland, Rotorua, North Island New Zealand, Pacific
Mount Bromo volcanic eruption sending up an ash cloud, East Java, Indonesia, Southeast Asia, Asia
Icebergs on a black sand volcanic beach next to the Jokulsarlon glacial lake in Vatnajokull National Park, southeast Iceland, Polar Regions
Tourists exploring White Island Volcano, an active volcano in the Bay of Plenty, North Island, New Zealand, Pacific
The colourful multi hued Champagne Pool, Wai-O-Tapu Thermal Wonderland, Waiotapu, North Island, New Zealand, Pacific
Volcaic ashes at Salto Truful, Volcan Llaima, Conguillio National Park, Lakes District, southern Chile, South America
Llamas and alpacas grazing, Tunupa, Bolivia, South America
Tourists exploring White Island Volcano, an active volcano in the Bay of Plenty, North Island, New Zealand, Pacific
Very green acid crater in the Wai-O-Tapu Thermal Wonderland, Waiotapu, North Island, New Zealand, Pacific
Cruise ship anchoring in the volcanic crater of Deception Island, South Shetland Islands, Antarctica, Polar Regions
Lake Toba (Danau Toba), the largest volcanic lake in the world, North Sumatra, Indonesia, Southeast Asia, Asia
Hikers are dwarfed by the volcanic Mount Ngauruhoe on the Tongariro Crossing trail, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific
Lassen Volcanic National Park, California, United States of America, North America
Icebergs on a black sand volcanic beach next to the Jokulsarlon glacial lake in Vatnajokull National Park in southeast Iceland, Polar Regions
Cruise ship anchoring in the volcanic crater of Deception Island, South Shetland Islands, Antarctica, Polar Regions
Overlooking recent lava flow on Heimaey Island, Iceland, Polar Regions
Wai-O-Tapu Thermal Wonderland, Rotorua, North Island New Zealand, Pacific
Cacti on Isla de los Pescadores, Volcan Tunupa and the salt flats, Salar de Uyuni, Southwest Highlands, Bolivia, South America
Icebergs on a black sand volcanic beach next to the Jokulsarlon glacial lake in Vatnajokull National Park in southeast Iceland, Polar Regions
Brown Bluff huge volcanic basalt, Tabarin Peninsula, Antarctica, Polar Regions
Icebergs at sunrise on Jokulsarlon Beach, a black volcanic sand beach in South East Iceland, Iceland, Polar Regions
Geothermal volcanic area in the Wai-O-Tapu Thermal Wonderland, Waiotapu, North Island, New Zealand, Pacific
Cacti on Isla de los Pescadores, Volcan Tunupa and the salt flats, Salar de Uyuni, Southwest Highlands, Bolivia, South America
Caldeira and Bromo at 2329 m, and Semeru at 3676m, volcanoes on Java, Indonesia, Southeast Asia, Asia
Pieces of glacier ice washed up on black volcanic sand beach at sunrise, near Jokulsarlon Glacial Lagoon, South Iceland, Polar Regions
Glacial icebergs washed up from North Atlantic Ocean onto volcanic sand beach near Jokulsarlon, South Iceland, Polar Regions
Black volcanic sand on six mile beach near Limbe, southern Cameroon, Africa
Frying Pan Lake,the largest hot spring in the world, Waimangu Volcanic Valley, North Island, New Zealand, Pacific
Road leading to Mount Ruapehu, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific