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Mini volcanos at Altverer, Iceland, Polar Regions
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
Steam plume from active vent beside crater lake, Volcan Poas, Cordillera Central, Costa Rica, Central America
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
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
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
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
Calvario church and volcano, Leon, Nicaragua, Central America
Moyogalpa port and Conception volcano, Ometepe island, 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
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
Rock formations against a clear blue sky with mountains in the background, showcasing natural erosion and geological features in the Teide National Park,UNESCO World Heritage Site, Tenerife, 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
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
Ruins of pre-Spanish Mahos village, Poblado de la Atalayita, Pozo Negro, Fuerteventura, Canary Islands, Spain, Atlantic, Europe
Hverfjall volcano crater at sunset, Myvatn, Iceland, Polar Regions
Crateri Silvestri view, Etna, UNESCO World Heritage Site, Etna, Sicily, Italy, Mediterranean, Europe
Volcanic landscape, Valle del Bove, Etna, UNESCO World Heritage Site, Etna, Sicily, Italy, Mediterranean, Europe
Etna National Park, UNESCO World Heritage Site, Etna, Sicily, Italy, Mediterranean, Europe
Volcanic landscape, Valle del Bove, Etna, UNESCO World Heritage Site, Etna, Sicily, Italy, Mediterranean, Europe
Crateri Silvestri, high angle view, Etna, UNESCO World Heritage Site, Etna, Sicily, Italy, Mediterranean, Europe
Crateri Silvestri view, Etna, UNESCO World Heritage Site, Etna, Sicily, Italy, Mediterranean, Europe
Volcanic landscape, Mount Etna, UNESCO World Heritage Site, Etna, Sicily, Italy, Mediterranean, Europe
Volcanic landscape, Etna, UNESCO World Heritage Site, Etna, Sicily, Italy, Mediterranean, Europe
Birch trees (Betula aetnensis) sprouting, Etna, Sicily, Italy, Mediterranean, Europe
Mud pots, fumaroles and dormant Volcan Santa Clara at the San Jacinto volcanic thermal area north of Leon, Leon, Nicaragua, Central America
Sea cliff and rock formations on Djupalonssandur beach, Iceland, Polar Regions
Black sand dunes and Vestrahorn Mountains at dawn, Stokksnes beach, Hofn, Iceland, Polar Regions
Starry night sky over a volcanic landscape with a colorful twilight gradient in Tenerife, Canary Islands, Spain, Atlantic, Europe
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
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
Tourists walking through lava field around the very active Erta Ale shield volcano, Danakil depression, Ethiopia, Africa
Very active lava lake of Erta Ale shield volcano, Danakil depression, Ethiopia, Africa
Very active lava lake of 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
Etna South, Catania, Sicily, Italy, Europe
Strokkur Geyser erupting at Geysir, South West area, Iceland, Polar Regions
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
Haleakala Crater, in Haleakala National Park, Maui's dormant volcano, Hawaii, United States of America, Pacific, North America
Group of hikers walking up to Mount Etna summit, UNESCO World Heritage Site, Etna, Sicily, Italy, Mediterranean, Europe
Mount Etna cable car, UNESCO World Heritage Site, Etna, Sicily, Italy, Mediterranean, Europe
Group of hikers walking up to Mount Etna summit, UNESCO World Heritage Site, Etna, Sicily, Italy, Mediterranean, Europe
Sign for Parque Nacional de Timanfaya, national park, designed by Cesar Manrique, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Volcanic landscape with rocky terrain in the foreground and a clear blue sky over the ocean in the background in Tenerife, Canary Islands, Spain, Atlantic, Europe
Nisyros volcano view, Nisyros Island, Dodecanese Islands, Greek Islands, Greece, Europe
Nisyros volcano, Nisyros Island, Dodecanese Islands, Greek Islands, Greece, Europe
Mountain landscape on Kilimanjaro, 5895 metres, UNESCO, highest mountain in Africa and one of the Seven Summits, Tanzania
Landscape in the Chalten Massif, Patagonia, Argentina
Mountain landscape on Kilimanjaro, 5895 metres, UNESCO, highest mountain in Africa and one of the Seven Summits, Tanzania
Aloe vera plants commercial cultivation, Tiscamanita, Fuerteventura, 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
Montana de Medio, mountain, Los Ajaches mountain range, 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
View over whitewashed houses to Monte Corona volcano cone, village of Maguez, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Monumento a la Fecundidad by Cesar Manrique, Monumento al Campesino, San Bartolome, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Volcano crater and black volcanic farmland soil, near Tinajo, 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
Walkway over lava field, Timanfaya Volcano Interpretation and Visitors' Centre, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Walkway over lava field, Timanfaya Volcano Interpretation and Visitors' Centre, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Motorhome on straight sealed tarmac road crossing lava flows, Malpais de Corona, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Euphorbia balsamifera and Kleinia Nerifolia growing on lava flows, Malpais de Corona, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Nisyros volcano, high angle view, Nisyros Island, Dodecanese Islands, Greek Islands, Greece, Europe
People walking around Stefanos crater moonlike landscape, Nisyros Island, Dodecanese Islands, Greek Islands, Greece, Europe
Splashes of sulphur colouring Stefanos crater ground, Nisyros Island, Dodecanese Islands, Greek Islands, Greece, Europe