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Mini volcanos at Altverer, Iceland, Polar Regions
Old Windmill with volcanoes in background near Tefia, Fuerteventura, Canary Islands, Spain
Third crater, created in 1994 and containing green lake, Irazu Volcano, Parque Nacional Volcan Irazu, Cartago, Costa Rica, Central America
Eruption and lava flow from the Monti Calcarazzi fissure on the southern flank of Mt Etna in 2001, the flow threatened the town of Nicolosi below, Mt Etna, Sicily, Italy
Gorely volcano, tundra plants on slopes, summit crater rims on skyline, Kamchatka, East Siberia, Russia
Koryaksky volcano, andesitic cone seen from shoulder of Avacha volcano, Kamchatka, East Siberia, Russia
Koryaksky volcano seen beyond walkers on crater rim of Avacha volcano, Kamchatka, East Siberia, Russia
Malyi Semyachik volcano, acid lake inside summit crater, Kamchatka, East Siberia, Russia
Hikers on rim of old crater, Avacha volcano, Kamchatka, East Siberia, Russia
Koryaksky volcano, 3456m high, conical andesite volcano, Kamchatka, East Siberia, Russia
Pompeii, Mt. Vesuvius behind, Campania, Italy, Europe
Mount Fuji, Honshu, Japan, Asia
Steam plume from active vent beside crater lake, Volcan Poas, Cordillera Central, Costa Rica, Central America
Restored buildings in Roman town buried in AD 79 by ash flows from Mount Vesuvius, in the background, Pompeii, UNESCO World Heritage site, Campania, Italy, Europe
Mt. Fuji and Yamanaka ko (lake), Yamanashi, Japan
Mt. Fuji and Yamanaka ko (lake), Yamanashi, Japan
Tourists ascending recent volcanic cone, Penguin Island, South Shetland Islands, Antarctica, Polar Regions
T'ai chi exercises at dawn, Agua volcano, Antigua, Guatemala, Central America
View of active volcano from helicopter, Big Island, Hawaii, Hawaiian Islands, United States of America (U.S.A.), North America
Wooden jetty and volcanoes in the distance, Lago Atitlan (Lake Atitlan), Guatemala, Central America
Salt pans and volcanoes in the background, near Yaiza, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Time exposure of steam and stars, Villarica Volcano, Chile, South America
Arenal Volcano from the La Fortuna side, Costa Rica
Arenal Volcano from the La Fortuna side, Costa Rica
Arenal Volcano from the La Fortuna side, Costa Rica
Arenal Volcano from the La Fortuna side, Costa Rica
Arenal Volcano from the La Fortuna side, Costa Rica
Arenal Volcano from the La Fortuna side, Costa Rica
Arenal Volcano near La Fortuna, Costa Rica
Hill town with backdrop of snowy volcano Mount Etna, Gangi, Palermo Province, Sicily, Italy, Mediterranean, Europe
Hill town with backdrop of snowy volcano Mount Etna, Gangi, Palermo Province, Sicily, Italy, Mediterranean, Europe
Hikers from the cablecar near the smoking summit of 3350m volcano Mount Etna during an active phase, Mount Etna, UNESCO World Heritage Site, Sicily, Italy, Mediterranean, Europe
Ash, rock and sulphur at the smoking summit of 3350m high volcano Mount Etna during an active phase, Mount Etna, UNESCO World Heritage Site, Sicily, Italy, Mediterranean, Europe
Agave succulent plant and active volcano 3350m Mount Etna seen at this northeast tourist town, Taormina, Catania Province, Sicily, Italy, Mediterranean, Europe
Calvario church and volcano, Leon, Nicaragua, Central America
Moyogalpa port and Conception volcano, Ometepe island, Nicaragua, Central America
Mount Mayon Volcano, Legazpi, south east Luzon, Philippines, Southeast Asia, Asia
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
Smoke rises from the active crater of Tungurahua Volcano that threatens the nearby town of Banos, Ambato Province, Central Highlands, Ecuador, South America
Village of Penelokan with the volcano of Mount Agung behind, Bali, Indonesia, Southeast Asia, Asia
Mauna Kea, Big Island, Hawaii, United States of America, North America
Karangasem Volcano, Bali, Indonesia, Southeast Asia, Asia
Aerial view of Mount Nyiragongo, an active volcano in the Virunga Mountains in Virunga National Park, near the border with Rwanda, known for its recent devastating eruptions, Democratic Republic of the Congo, Great Rift Valley, Africa
Aerial view of Mount Nyiragongo, an active volcano in the Virunga Mountains in Virunga National Park, near the border with Rwanda, known for its recent devastating eruptions, Democratic Republic of the Congo, Great Rift Valley, Africa
Aerial view of Mount Nyiragongo, an active volcano in the Virunga Mountains in Virunga National Park, near the border with Rwanda, known for its recent devastating eruptions, Democratic Republic of the Congo, Great Rift Valley, Africa
Aerial view of Mount Karisimbi, a dormant volcano in the Virunga Mountains on the border between Rwanda and the Democratic Republic of Congo (DRC), flanked by Mount Mikeno to the north, Mount Bisoke to the east and Mount Nyiragongo to the west, Great Rift Valley, Africa
Aerial view of Mount Karisimbi, a dormant volcano in the Virunga Mountains on the border between Rwanda and the Democratic Republic of Congo (DRC), at 4507m the highest of the mountain range, Great Rift Valley, Africa
Aerial view of Mount Nyiragongo, an active volcano in the Virunga Mountains in Virunga National Park, near the border with Rwanda, known for its recent devastating eruptions, Democratic Republic of the Congo, Great Rift Valley, Africa
Aerial view of Mount Sabyinyo, an extinct volcano and oldest of the Virunga Mountains, the summit at 3645ï¾ metres marks the intersection of the borders of Democratic Republic of the Congo (DRC), Rwanda, and Uganda, Virunga Volcanoes, Africa
Aerial view of Mount Visoke (Mount Bisoke), an extinct volcano straddling the border of Rwanda and Democratic Republic of the Congo (DRC) showing crater lake, with Mount Mikeno in background, Virunga Volcanoes, Great Rift Valley, Africa
Aerial view of Mount Nyiragongo, an active volcano in the Virunga Mountains in Virunga National Park, near the border with Rwanda, known for its recent devastating eruptions, Democratic Republic of the Congo, Great Rift Valley, Africa
Boiling mud at an active andesite stratovolcano on White Island, off the east side of North Island, New Zealand, Pacific
Lava flowing down mountain from Eyjafjallajokull volcano, Iceland, Polar Regions
Hiker in red jacket walking down new footpath across the volcanic landscape towards Madeira's third highest peak, Pico do Arieiro, Madeira, Portugal, Europe
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
Malpais badlands volcanic landscape looking northeast from Los Hervideros, Parque Natural Los Volcanes, near Yaiza, Lanzarote, Canary islands, Spain, Atlantic, Europe
Volcano crater and black volcanic farmland soil, near Tinajo, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Sign for Parque Nacional de Timanfaya, national park, designed by Cesar Manrique, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Walkway over lava field, Timanfaya Volcano Interpretation and Visitors' Centre, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Cotopaxi Volcano 5897m summit, Cotopaxi National Park, Cotopaxi Province, Ecuador, South America
Death Valley (Valle de la Muerte) and Licancabur Volcano, San Pedro de Atacama, Atacama Desert, North Chile, Chile, South America
Ruminahui Volcano summit, Cotopaxi National Park, Avenue of Volcanoes, Ecuador, South America
Starry night sky over a volcanic landscape with a colorful twilight gradient in Tenerife, Canary Islands, Spain, Atlantic, Europe
Acid Crater Lake, White Island Volcano, an active volcano in the Bay of Plenty, North Island, New Zealand, Pacific
Climbers near summit of El Misti volcano, 5822m, Arequipa, Peru, South America
El Misti volcano 5822m above city, Arequipa, Peru, South America
Summit of active Volcan San Cristobal, 1745m, in the North West volcano chain, the country's highest volcano, Chinandega, Nicaragua, Central America
Climber near the top of Cotopaxi Volcano, Cotopaxi Province, Ecuador, South America
Graveyard and the Concepcion volcano on Ometepe island, Lake Nicaragua, Nicaragua, Central America
Mount Bromo (Gunung Bromo), an active volcano, erupting at sunrise throwing up ash clouds, East Java, Indonesia, Southeast Asia, Asia
Mount Ruapehu, Ngauruhoe and Tongariro (active volcanoes) from Lake Taupo, North Island, New Zealand, Pacific
Toliman volcano, Lago de Atitlan, Guatemala, Central America
Glowing active volcanic crater of Volcan Telica at night with star trails and shooting star (meteor) on right, Leon, Nicaragua, Central America
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
Sunrise over the smoking Gunung Bromo volcano, Bromo-Tengger-Semeru National Park, Java, Indonesia, Southeast Asia, Asia
Active Gunung Bromo volcano at night, Bromo-Tengger-Semeru National Park, Java, Indonesia, Southeast Asia, Asia
Volcan Fuego, seen from Indian Nose above Lago Atitlan, Guatemala, Central America
Aerial of Taupo Town and Mount Tauhara, Waikato River and Lake Taupo, North Island, New Zealand, Pacific
Crater of Poas Volcano in Poas Volcano National Park, in the Cordillera Central mountain range of Costa Rica, Central America
Crater of Poas Volcano in Poas Volcano National Park, in the Cordillera Central mountain range of Costa Rica, Central America
Landscape, Isla Ometepe, Volcan Concepcion, Lago de Nicaragua, Nicaragua, Central America
Cresting the peak of Pacaya Volcano in Guatemala City, Guatemala, Central America
Volcano Tavurvur, Rabaul, East New Britain, Papua New Guinea, Pacific
The very active lava lake of Mount Nyiragongo, Virunga National Park, UNESCO World Heritage Site, Democratic Republic of the Congo, Africa
The volcanic mountain chain of the Virunga National Park, 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
Sailing on Lake Llanquihue, snow-capped Orsono volcano, from Puerto Varas, Lakes District, Chile, South America
Landscape of sunrise at Mount Bromo, East Java, Indonesia, Southeast Asia, Asia
Arenal Volcano and Arenal Lake at sunset, near La Fortuna, Alajuela Province, Costa Rica, Central America
Volcanic beach, Stromboli, Aeolian Islands, UNESCO World Heritage Site, Sicily, Italy, Mediterranean, Europe
Arenal Volcano from the La Fortuna side, Costa Rica
Mount Etna, Sicily, Italy, Europe
Starry night sky over majestic mountain landscape with Milky Way visible and rocky terrain in the foreground, Teide National Park, UNESCO World Heritage Site, Tenerife, Canary Islands, Spain, Atlantic, Europe
Rocky volcanic badlands (malpais) landscape, Malpais Grande National Park, Fuerteventura, Canary Islands, Spain, Atlantic, Europe
Group of hikers walking up to Mount Etna summit, UNESCO World Heritage Site, Etna, Sicily, Italy, Mediterranean, Europe
View over whitewashed houses to Monte Corona volcano cone, village of Maguez, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Volcanic landscape, Mount Pico Partido, Parque Nacional de Timanfaya, national park, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Lake Chungara and the snow capped volcano Parinacota, Lauca National Park, Andes, Chile, South America