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Mini volcanos at Altverer, Iceland, Polar Regions
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
Pigeon cotes cut in volcanic rock, apricot trees in foreground, Uchisar, Cappadocia, Turkey, Eurasia
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
Mt. Fuji and Yamanaka ko (lake), Yamanashi, Japan
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
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
T'ai chi exercises at dawn, Agua volcano, Antigua, Guatemala, Central America
Salt pans and volcanoes in the background, near Yaiza, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Backpacker walking across dried up lake towards Llaima volcano, Conguillio National Park, 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 from the La Fortuna side, Costa Rica
Arenal Volcano from the Sky Tram, Costa Rica
Arenal Volcano near La Fortuna, Costa Rica
Calvario church and volcano, Leon, Nicaragua, Central America
Moyogalpa port and Conception volcano, Ometepe island, Nicaragua, Central America
Bus and the famous El Nariz del Diablo (The Devil's Nose) train en route to Riobamba with Chimborazo volcano in the distance, Riobamba, Chimborazo Province, Central Highlands, Ecuador, South 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
Cerro Catedral and Lago Toncek, Nahuel Huapi National Park, Bariloche, Patagonia, Argentina, 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
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
Hiker in red jacket walking down new footpath across the volcanic landscape towards Madeira's third highest peak, Pico do Arieiro, Madeira, Portugal, Europe
Cactus plants inside Jardin de Cactus designed by Cesar Manrique, Guatiza, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Hverfjall volcano crater at sunset, Myvatn, 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
Icebergs at sunset on Jokulsarlon Beach, a black volcanic sand beach in South East Iceland, Iceland, Polar Regions
Russian research ship Akademik Ioffe moored in the flooded volcanic caldera of Deception Island, South Shetland Islands, Antarctic Peninsula, Antarctica, Polar Regions
Tourists crossing the mountains that rim the volcanic caldera of Deception Island, South Shetland Islands, Antarctic Peninsula, Antarctica, Polar Regions
Cacti on Isla de los Pescadores, Volcan Tunupa and the salt flats, Salar de Uyuni, Southwest Highlands, Bolivia, South 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
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
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
Volcanic beach below Volcano Tavurvur, Rabaul, East New Britain, Papua New Guinea, Pacific
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
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
Black lava beach with reflected mountain, Barilochie, Patagonia, Argentina, South America
People walking on Gran Cratere rim, Vulcano Island, Aeolian Islands, UNESCO World Heritage Site, Sicily, Italy, Mediterranean, Europe
Etna South, Catania, Sicily, Italy, Europe
Mount Escriva, South Etna, Catania, Sicily, Italy, Europe
Penstemon flowers, Mount St. Helens, Mount St. Helens National Volcanic Monument, Washington state, United States of America, North America
Ancient cave dwellings in the tufa formations at Goreme Open Air Museum, Goreme, UNESCO World Heritage Site, Cappadocia, Anatolia, Turkey, Asia Minor, Asia
Landscape covered in volcanic ash and dust with the ash plume of the Eyjafjallajokull eruption in the distance, southern area, Iceland, Polar Regions
Jardin de Cactus designed by Cesar Manrique, Guatiza, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Volcanic desert landscape and its fabulous geographical structures caught in evening light, Goreme, Cappadocia, Anatolia, Turkey, Asia Minor, Eurasia
Batak Houses at Lake Toba (Danau Toba), the largest volcanic lake in the world, North Sumatra, Indonesia, Southeast Asia, Asia
Etna South, Mount Etna, UNESCO World Heritage Site, Catania, Sicily, Italy, Europe
Crater of Mount Eden with city beyond, Auckland, Central Auckland, North Island, New Zealand, Pacific
Arenal Volcano from the La Fortuna side, Costa Rica
Ruins of pre-Spanish Mahos village, Poblado de la Atalayita, Pozo Negro, Fuerteventura, Canary Islands, Spain, Atlantic, Europe
Footpath trail from Gran Valle to Cofete, Jandia peninsula, Fuerteventura, Canary Islands, Spain, Atlantic, Europe
Aloe vera plants commercial cultivation, Tiscamanita, Fuerteventura, Canary Islands, Spain, Atlantic, Europe
Diverging plates in a volcanic fissure zone, Myvatn, Iceland, Polar Regions
Grape vines growing in black volcanic pits in La Geria, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Volcanic landscape, Mount Pico Partido, Parque Nacional de Timanfaya, national park, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Food being cooked on volcanic grill at visitor centre, Parque Nacional de Timanfaya, national park, Lanzarote, Canary Islands, Atlantic, Europe
Starry night sky over a volcanic landscape with a colorful twilight gradient in Tenerife, Canary Islands, Spain, Atlantic, Europe
Cacti on Isla de los Pescadores, Volcan Tunupa and the salt flats, Salar de Uyuni, Southwest Highlands, Bolivia, South America
The view of the mountains of Vestrahorn from black volcanic sand beach with grasses at sunset, Stokksnes, South Iceland, Iceland, Polar Regions
Garden path crossing solidified pahoehoe or ropey lava field, Tahiche, Lanzarote, Canary Islands, Spain, Atlantic, 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
Rocky volcanic badlands (malpais) landscape, Malpais Grande National Park, Fuerteventura, 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
View over whitewashed houses to Monte Corona volcano cone, village of Maguez, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Sign for Parque Nacional de Timanfaya, national park, designed by Cesar Manrique, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Mount Bromo volcano erupting at sunrise, sending volcanic ash high into the sky, East Java, Indonesia, Southeast Asia, Asia
Tourists exploring White Island Volcano, an active volcano in the Bay of Plenty, North Island, New Zealand, Pacific
Cactus plants inside Jardin de Cactus designed by Cesar Manrique, Guatiza, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Erosion with volcanic tuff pillars near Goreme, Cappadocia, Anatolia, Turkey, Asia Minor, Asia
The west flank of 6310m Volcan Chimborazo, with its unique type of Andean high paramo (puna) made dry by the rain shadow, Chimborazo Province, Central Highlands, Ecuador, South America