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The southeast summit of O'Leary Peak, Coconino National Forest, Arizona, USA
Volcanic cinder hills in Coconino National Forest, Arizona, USA
Volcanic cinder hills in Coconino National Forest, Arizona, USA
Waiotapu Thermal Wonderland, North Island, New Zealand. Views of steaming craters on the Waiotapu Thermal Track, New Zealand
Walking paths through a volcano landscape in Waiotapu Thermal Wonderland, North Island, New Zealand
Aerial view of Vesuvius crater and Sorrento peninsula at sunrise, Naples, Campania, Italy, Europe
El Tatio Geysers, 4300m above sea level, El Tatio is the world's highest geyser field, the area is ringed by volcanoes and fed by 64 geysers, Atacama Desert, Norte Grande, Chile, South America
A burned tree below a volcanic cinder hill in the Coconino National Forest, Arizona, USA
An SUV traveling near Volcanic cinder hills in Coconino National Forest, Arizona, USA
Volcanic cinder hills in Coconino National Forest, Arizona, USA
Volcanic cinder hills in Coconino National Forest, Arizona, USA
Bartolome Island with Pinnacle Rock, a volcanic plug, to the right, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America
Orchard and vineyard, archaeological site of Pompeii, UNESCO World Heritage Site, province of Naples, Campania region, Italy, Europe
Guest from the Lindblad Expedition ship National Geographic Endeavour in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America
Guests from the Lindblad Expedition ship National Geographic Endeavour in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America
Lava lizard (Microlophus spp) in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America
Guests from the Lindblad Expedition ship National Geographic Endeavour in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America
Landscape on the trek between Arieiro peak and Ruivo peak of Madeira island, Portugal
Ocean waves in Porto Moniz, Madeira, Portugal
The boundary fence between Coconino National Forest and Sunset Crater National Monument of Arizona, USA
Volcanic cinder hills in Coconino National Forest, Arizona, USA
The boundary fence between Coconino National Forest and Sunset Crater National Monument of Arizona.
Volcanic cinder hills in Coconino National Forest, Arizona, USA
Volcanic cinder hill in Coconino National Forest, Arizona, USA
October 19, 2013 - Eruption of Kliuchevskoi (Klyuchevskoy) Volcano, Kamchatka, Russia. Ash and steam cloud are blown away by wind. View over industrial area of Kliuchi town with Kamchatka River in foreground.
October 16, 2013 - Nighttime eruption of Kliuchevskoi (Klyuchevskoy) Volcano, Kamchatka, Russia. Ash cloud and lava flow are produced by the activity of the snowcovered conical stratovolcano. Column of steam rises where lava flow is melting glacier.
October 16, 2013 - Nighttime eruption of Kliuchevskoi (Klyuchevskoy) Volcano, Kamchatka, Russia.
Ash cloud and lava flow are produced by the activity of the snowcovered conical stratovolcano.
October 15, 2013 - Nighttime eruption of Kliuchevskoi (Klyuchevskoy) Volcano, Kamchatka, Russia.
Ash cloud and lava flow are produced by the activity of the snowcovered conical stratovolcano. Column of steam rises where lava flow is melting glacier.
October 24, 2013 - Eruption of Kliuchevskoi (Klyuchevskoy) Volcano, Kamchatka, Russia, seen in evening light. Ash cloud is produced by the activity. Kamen volcano is seen on right.
October 21, 2013 - Nighttime view of incandescent rockfall of glowing lava down flank of lava dome of Shiveluch Volcano, Kamchatka, Russia.
October 16, 2013 - Eruption of Kliuchevskoi (Klyuchevskoy) Volcano, Kamchatka, Russia. Ash cloud and lava flow are produced by the volcano which is partially shrouded in cloud. Kamen volcano is seen on right.
October 16, 2013 - Nighttime eruption of Kliuchevskoi (Klyuchevskoy) Volcano, Kamchatka, Russia. Ash cloud and lava flow are produced by the activity of the volcano which is partially shrouded in cloud. Kamen volcano is seen on right.
October 21, 2013 - Nighttime moonlit view of incandescent rockfall of glowing lava down flank of lava dome of Shiveluch Volcano, Kamchatka, Russia.
February 24, 2013 - Mushroom shaped ash cloud produced by powerful explosive eruption of Sakurajima volcano, Kagoshima, Japan.
February 24, 2013 - Ash cloud rising following eruption of Sakurajima volcano, Japan
February 24, 2013 - Powerful explosive eruption of Sakurajima volcano, Japan. Ash cloud rises against blue sky.
January 24, 2012 - Scoria cone on Nyamuragira Volcano, Democratic Republic of Congo.
January 24, 2012 - Yellow sulphurous deposits resulting from degassing coating scoria cone formed during eruption on Nyamuragira Volcano, Democratic Republic of Congo.
March 1, 2010 - Sabo channel at Haramatsu River with tubular grid dam (slit dam type), for defense and protection against mudflows, with Sakurajima volcano in background, Japan
Volcanic cinder hills in Coconino National Forest, Arizona, USA
Licancabur stratovolcano reflected in Laguna Tebinquinche, Chile.
Panoramic view of the Chiliques stratovolcano in Chile.
Lascar volcano in Chile.
Panoramic view of the Lascar volcano complex in Chile.
Abra Bay, Sao Lourenco peninsula, Madeira island, Atlantic Ocean, Portugal
Danger sign in front of volcanic field and steaming pond in Noboribetsu, Hell Valley, Hokkaido, Japan, Asia
Kicker Rock, a volcanic formation near the island of San Cristobal, a popular spot for snorkelling, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America
Kicker Rock, a volcanic formation near the island of San Cristobal, a popular spot for snorkelling, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America
Bartolome Island with Pinnacle Rock, a volcanic plug, to the right, a location in the 2003 film Master and Commander, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America
O'Leary Peak, Coconino National Forest, Arizona, USA
Volcanic cinder hills in Coconino National Forest, Arizona, USA
Volcanic cinder hills in Coconino National Forest, Arizona, USA
Volcanic cinder hills in Coconino National Forest, Arizona, USA
Volcanic cinder hills in Coconino National Forest, Arizona, USA
Volcanic cinder hills in Coconino National Forest, Arizona, USA
Rice paddy fields, with heavy monsoon clouds gathering over volcanic crater hills across Lake Toba from Samosir Island, Sumatra, Indonesia, Southeast Asia, Asia
Rice paddy fields, with heavy monsoon clouds gathering over volcanic crater hills across Lake Toba from Samosir Island, Sumatra, Indonesia, Southeast Asia, Asia
Cross in front of the Nuestra Senora de los Remedios Church on top of the Great Pyramid with Popocatepetl Volcano in the background, Cholula, Puebla State, Mexico
View from summit of Pico do Areeiro, Madeira
View from summit of Pico do Areeiro, Madeira
Aerial view of volcanic rocks of Pico de la Zarza mountain peak during a misty sunrise, Fuerteventura, Canary Islands, Spain, Atlantic, Europe
Sunset Crater Volcano viewed from the forested slope of O'Leary Peak in northern Arizona.
A tourist observes Teide volcano from La Ruleta viewpoint during sunrise, Teide National Park, La Orotava, Santa Cruz de Tenerife, Tenerife, Canary Islands, Macaronesia, Spain, Western Europe
Teide volcano from La Ruleta viewpoint during sunset, Teide National Park, La Orotava, Santa Cruz de Tenerife, Tenerife, Canary Islands, Macaronesia, Spain, Western Europe
Sombrero Chino (Chinese Hat) Island, just off Santiago Island in the Galapagos, UNESCO World Heritage Site, Ecuador, South America
Bjarnarhofn Lava Field, Snaefellsnes Peninsula, Iceland
Ingjaldsholl Church, Hellisandur, Snaefellsjokull National Park, Snaefellsnes Peninsula, Iceland
Dramatic Rock Spires and Crashing Waves at Pancake Rocks, Punakaiki, Paparoa National Park, West Coast, New Zealand
Aerial drone view of particular ice textures formed in the Svinafellsjokull glacier following global warming, Iceland, Polar Regions
The Tongariro Crossing crosses 19 kilometers of the barren, volcanic desert, Tongariro National Park, UNESCO World Heritge Site, North Island, New Zealand, Pacific
Poas volcano, Poas National Park, Costa Rica, Central America
Landscape around Wakan village, Western Al Hajar Mountains, border South Batinah and Al Dakhiliyah Governorates, Oman, Arabian Peninsula
O'Leary Peak, Coconino National Forest, Arizona, USA
Mount Vesuvius, a volcano located on the Bay of Naples about 9km from the city of Naples, Campania, Italy
A view of the Bay of Naples with the cruise liner port in the foreground and Mount Vesuvius in the background, Campania, Italy
Poas volcano, Poas National Park, Costa Rica, Central America
Wide Panoramic view of The Bjarnarhofn Lava Field, Snaefellsnes Peninsula, Iceland
Arenal volcano, Arenal Volcano National Park, La Fortuna, Costa Rica
Pinnacle Rock on Bartolome Island in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America
Arenal volcano, Arenal Volcano National Park, La Fortuna, Costa Rica
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
Views of the active Popocateptl volcano, with a plume of smoke from historical old town in Puebla, Mexico
AlUla Zipline, from Harrat volcanic plateau, racing 1.5km at up to 120km/hr, in incredible scenery of the Mountains, Medina Province, Saudi Arabia
Encounter with dromedaries on the road that crosses the Harrat volcanic plateau, AlUla, Medina Province, Saudi Arabia
Encounter with dromedaries on the road that crosses the Harrat volcanic plateau, AlUla, Medina Province, Saudi Arabia
Encounter with dromedaries on the road that crosses the Harrat volcanic plateau, AlUla, Medina Province, Saudi Arabia
People at the Viewpoint on the Harrat volcanic plateau, AlUla, Medina Province, Saudi Arabia
People at the Viewpoint on the Harrat volcanic plateau, AlUla, Medina Province, Saudi Arabia
Woman responsible for ensuring visitor safety and good behavior at the Viewpoint, Harrat volcanic plateau, AlUla, Medina Province, Saudi Arabia
Woman responsible for ensuring visitor safety and good behavior at the Viewpoint, Harrat volcanic plateau, AlUla, Medina Province, Saudi Arabia
Galapagos Land Iguana (Conolophus subcristatus), large lizard can can grow to five feet long and live for 60 years, South Plaza island, Galapagos, UNESCO World Heritage Site, Ecuador, South America
AlUla Zipline, from Harrat volcanic plateau, racing 1.5km at up to 120km/hr, in incredible scenery of the Mountains, Medina Province, Saudi Arabia
The archaeological ruins of Pompeii, UNESCO, Campania, Italy
The archaeological ruins of Pompeii, UNESCO, Campania, Italy
The archaeological ruins of Pompeii with Mount Vesuvius in the background, UNESCO, Campania, Italy
Ribera dos Caldeiroes waterfalls, near Achada, Sao Miguel, Azores Islands, Atlantic, Portugal
Trees and Lagoa Azul, Sete Cidades, Sao Miguel, Azores Islands, Atlantic, Portugal
Atlantic surf at Mosteiros, north west coast, Sao Miguel, Azores Islands, Atlantic, Portugal