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Mini volcanos at Altverer, Iceland, Polar Regions
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
View north across fields at Chichigalpa to Volcan San Cristobal at the northwest end of Nicaragua's chain of volcanoes, Nicaragua, Central America
Gorely volcano, tundra plants on slopes, summit crater rims on skyline, 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
Pompeii, Mt. Vesuvius behind, Campania, Italy, Europe
Palm trees and cultivation in volcanic soil, Lanzarote, Canary Islands, Spain
Steam plume from active vent beside crater lake, Volcan Poas, Cordillera Central, Costa Rica, Central America
The top of the volcanic cone of Mount Ngauruhoe in the Tongariro National Park in the Wellington area of the North Island of New Zealand, Australasia
Ruins of Pompeii, destroyed in volcanic eruption of AD 79, Pompeii, UNESCO World Heritage site, Campania, Italy, Europe
Mt. Fuji and Yamanaka ko (lake), Yamanashi, Japan
Mt. Fuji and Yamanaka ko (lake), Yamanashi, Japan
Mt. Fuji and Yamanaka ko (lake), Yamanashi, Japan
Krill swarm cooked pink by fumarole activity on the volcanic island of Deception Island, Antarctica, Polar Regions
Black and white chinstrap penguins, black volcanic beach and black glacier, Deception Island, Antarctica, Polar Regions
Tourists ascending recent volcanic cone, Penguin Island, South Shetland Islands, Antarctica, Polar Regions
Strokkur Geyser erupting at Geysir, South West area, Iceland, Polar Regions
Panoramic view of the town of Uchisar with its old houses and ancient cave dwellings in the volcanic tufa, Cappadocia, Anatolia, Turkey, Asia Minor, Asia
Panoramic view of ancient cave dwellings in the volcanic tufa formations, Uchisar, Cappadocia, Anatolia, Turkey, Asia Minor, Asia
Panoramic view of tufa formations near the town of Uchisar, Cappadocia, Anatolia, Turkey, Asia Minor, Asia
Panoramic view of tufa formations, Valley of the Fairy Chimneys (Pasabag), near Zelve, Cappadocia, Anatolia, Turkey, Asia Minor, Asia
Hikers, volcanic scenery and hiking trail, Kirishima National Park, Kagoshima prefecture, Kyushu, Japan, Asia
Late winter hikers on snowfield in South Crater on Tongariro Crossing, Tongariro National Park, UNESCO World Heritage Site, South Auckland, North Island, New Zealand, Pacific
Petroglyph National Monument, petroglyphs carved into volcanic rock by American Indians 400 to 700 years ago, New Mexico, United States of America, North America
T'ai chi exercises at dawn, Agua volcano, Antigua, Guatemala, Central America
Wooden jetty and volcanoes in the distance, Lago Atitlan (Lake Atitlan), Guatemala, Central America
View along volcanic cliffs towards distant Fira, Imerovigli, Santorini (Thira) (Thera), Cyclades Islands, South Aegean, Greek Islands, Greece, Europe
Volcanic rock formations, Kleftiko, island of Milos, Cyclades, Greek Islands, Greece, Europe
Salt pans and volcanoes in the background, near Yaiza, Lanzarote, Canary Islands, Spain, Atlantic, Europe
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 from the La Fortuna side, Costa Rica
Arenal Volcano near La Fortuna, Costa Rica
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
Calvario church and volcano, Leon, Nicaragua, Central America
Moyogalpa port and Conception volcano, Ometepe island, Nicaragua, Central America
Manjanggul Lava Tube, UNESCO World Heritage Site, Jeju Island, South Korea, Asia
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
Church belfry ruins and volcanic cone with smoke plume of Mount Mayon, 2462m, Cagsawa, where 1200 people were buried alive in 1814 eruption, Bicol Province, Luzon Island, Philippines, Southeast Asia, Asia
Volcanic cone with plume of smoke of Mount Mayon, 2462m, and grotto or wayside shrine, Bicol Province, Luzon Island, Philippines, Southeast Asia, Asia
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
Female tourist on boardwalk by the Morning Glory Pool, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Hikers enjoy the view on the verdant slopes of the active Tungurahua Volcano that threatens the nearby town of Banos, Ambato Province, Central Highlands, Ecuador, South 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
Cape buffalo (African buffalo) (Syncerus caffer) with a red-billed oxpecker (Buphagus erythrorhynchus), Ngorongoro Crater, Ngorongoro Conservation Area, Tanzania,East Africa,Africa
Manjanggul Lava Tube, UNESCO World Heritage Site, Jeju Island, South Korea, Asia
Cerro Catedral and Lago Toncek, Nahuel Huapi National Park, Bariloche, Patagonia, Argentina, South America
Petroglyphs at the archeological site of Orongo Ceremonial village high on the crater rim of Ranu Kau, Rapa Nui (Easter Island), UNESCO World Heritage Site, Chile, South 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
Hot air balloon flight over the famous volcanic tufa rock formations around Goreme, Cappadocia, Anatolia, Turkey, Asia Minor, Eurasia
Volcanic tufa formations, known as fairy chimneys, Pasabag, near Zelve, Cappadocia, Anatolia, Turkey, Asia Minor, Eurasia
Steam plume from rising dome within crater, Mount St. Helens, Washington state, United States of America, North America
Observatory, Mauna Kea, Big Island, Hawaii, United States of America, North America
Mauna Kea, Big Island, Hawaii, United States of America, North America
Mount Etna, Sicily, Italy, Europe
Vineyards of La Geria on volcanic ash of 1730s eruptions, Lanzarote, Canary Islands, Spain, Europe
Karangasem Volcano, Bali, Indonesia, Southeast Asia, Asia
Lava flowing down mountain from Eyjafjallajokull volcano, Iceland, Polar Regions
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
Aloe vera plants commercial cultivation, Tiscamanita, Fuerteventura, Canary Islands, Spain, Atlantic, Europe
Heimaey Town, Heimaey Island, Vestmannaeyjar, volcanic Westman Islands, Iceland, Polar Regions
Hverfjall volcano crater at sunset, Myvatn, Iceland, Polar Regions
Sheep, Heimaey Island, Vestmannaeyjar, volcanic Westman Islands, Iceland, Polar Regions
Mud pots, fumaroles and dormant Volcan Santa Clara at the San Jacinto volcanic thermal area north of Leon, Leon, Nicaragua, Central America
Malpais badlands volcanic landscape looking northeast from Los Hervideros, Parque Natural Los Volcanes, near Yaiza, Lanzarote, Canary islands, Spain, Atlantic, Europe
Grape vines growing in black volcanic pits in La Geria, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Grape vines growing in black volcanic soil in protected enclosed pits, La Geria, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Grape vines growing in black volcanic pits in La Geria, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Volcano crater and black volcanic farmland soil, near Tinajo, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Volcanic landscape of solidified lava flows and distant cone volcanoes, near Yaiza, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Piece of glacial ice washed ashore by the incoming tide onto beach of volcanic sand near glacial lagoon at Jokulsarlon, Iceland, Polar Regions
Petroglyph National Monument, petroglyphs carved into volcanic rock by American Indians 400 to 700 years ago, New Mexico, United States of America, North America
Blue water in geothermal pool with water spout from Strokkur Geysir visible in the distance, Geysir, near Reykjavik, Iceland, Polar Regions
Water spout from Strokkur Geysir exploding into the sky on a stormy evening, near Reykjavik, Iceland, Polar Regions
Icebergs at sunset on Jokulsarlon Beach, a black volcanic sand beach in South East Iceland, Iceland, Polar Regions
Summit of active Volcan San Cristobal, 1745m, in the North West volcano chain, the country's highest volcano, Chinandega, Nicaragua, Central America
Jardin de Cactus designed by Cesar Manrique, Guatiza, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Volcano cone and black volcanic soil farmland, Monta Tinache, near Tinajo, Lanzarote, Canary Islands, Spain, Atlantic, Europe
El Triunfador sculpture, Fundación Cesar Manrique, Taro de Tahíche, Lanzarote, Canary islands, Spain, Atlantic, Europe