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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
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 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 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.
December 3, 2012 - Colourful crater lakes of Kelimutu volcano, Flores Island, Indonesia. Tiwu Nua Muri Kofah (Lake of Young Men and Maidens) and Tiwu Ata Polo (Bewitched Lake). The two lakes are highly acidic due to underwater fumarole activity and are turqoise in colour.
December 3, 2012 - Colourful crater lakes of Kelimutu volcano, Flores Island, Indonesia. A crater wall separates Tiwu Nua Muri Koo Fai (Lake of Young Men and Maidens) and Tiwu Ata Polo (Bewitched Lake). The two lakes are highly acidic due to underwater fumarole activity and are turqoise in colour.
December 3, 2012 - Colourful crater lakes of Kelimutu volcano, Flores Island, Indonesia. Tiwu Nua Muri Koo Fai (Lake of Young Men and Maidens) and Tiwu Ata Polo (Bewitched Lake). The two lakes are highly acidic due to underwater fumarole activity and are turqoise in colour.
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.
February 10, 2008 - Dallol geothermal area, brine hot springs, Danakil Depression, Ethiopia.
January 27, 2011 - Dallol geothermal area, potassium salt deposits formed by brine hot springs, Danakil Depression, Ethiopia.
January 27, 2011 - Dallol geothermal area, potassium salt deposits formed by brine hot springs, Danakil Depression, Ethiopia.
January 27, 2011 - Dallol geothermal area, potassium salt deposits formed by brine hot springs, Danakil Depression, Ethiopia.
January 27, 2011 - Dallol geothermal area, potassium salt deposits formed by brine hot springs, Danakil Depression, Ethiopia.
January 27, 2011 - Dallol geothermal area, potassium salt deposits formed by brine hot springs, Danakil Depression, Ethiopia.
January 27, 2011 - Dallol geothermal area, terraces, potassium salt deposits formed by brine hot springs, Danakil Depression, Ethiopia.
January 27, 2011 - Dallol geothermal area, terraces of potassium salt deposits formed by brine hot springs, Danakil Depression, Ethiopia.
January 27, 2011 - Dallol geothermal area, potassium salt deposits formed by brine hot springs, Danakil Depression, Ethiopia.
January 27, 2011 - Dallol geothermal area, potassium salt deposits formed by brine hot springs, Danakil Depression, Ethiopia.
Volcanic cinder hills in Coconino National Forest, Arizona, USA
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
View from summit of Pico do Areeiro, Madeira
View from summit of Pico do Areeiro, Madeira
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
Bjarnarhofn Lava Field, Snaefellsnes Peninsula, Iceland
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
Wide Panoramic view of The Bjarnarhofn Lava Field, Snaefellsnes Peninsula, Iceland
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
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
Atlantic surf at Mosteiros, north west coast, Sao Miguel, Azores Islands, Atlantic, Portugal
Mosteiros and coast, Sao Miguel, Azores Islands, Atlantic, Portugal
Aerial of the Trou du Natron volcanic crater and its natron lakes, Tibesti Mountains, Chad
Aerial of the Trou du Natron volcanic crater and its natron lakes, Tibesti Mountains, Chad
Aerial over Trou du Natron with volcano Tousside in the background, Tibesti Mountains, Chad
Aerial of the Trou du Natron volcanic crater and its natron lakes, Tibesti Mountains, Chad
Aerial of the Trou du Natron volcanic crater and its natron lakes, Tibesti Mountains, Chad
Volcanic scenery in the valley of Alto Mira, northwest Saint Anthony, Cape Verde
Volcanic scenery in the valley of Alto Mira, northwest Saint Anthony, Cape Verde
Desert landscape in the far southwest of Saint Anthony, Cape Verde
The spectacular scenery of the north coast and volcanic highlands of Saint Anthony, Cape Verde
The spectacular scenery of the north coast and volcanic highlands of Saint Anthony, Cape Verde
The dramatic scenery in the volcanic highlands of northern Saint Anthony, Cape Verde
Arid soil on edge of the smoky Erta Ale volcano from above, Danakil Depression, Afar Region, Ethiopia, Africa
Panoramic aerial view of the active Erta Ale volcano caldera, Danakil Depression, Afar Region, Ethiopia, Africa
Panoramic aerial view of sunset over the active Erta Ale volcano crater, Danakil Depression, Afar Region, Ethiopia, Africa
Aerial view of stone huts on top of majestic Erta Ale volcano, Danakil Depression, Afar Region, Ethiopia, Africa
Vestrahorn Mountain and Volcanic Black Sand Dunes, Stokksnes Peninsula, Iceland
Irazu volcano, Irazu Volcano National Park, Cartago Province, Costa Rica
View of geysers at Geysir Hot Springs in winter, Western Region, Iceland
View of geysers at Geysir Hot Springs in winter, Western Region, Iceland
Continental drift between North American and Eurasian tectonic plates, Thingvellir National Park, UNESCO, in winter, Western Region, Iceland
People and continental drift of North American and Eurasian tectonic plates, Thingvellir National Park in winter, UNESCO, Western Region, Iceland
View of snow covered landscape in Thingvellir National Park, UNESCO, in winter, Western Region, Iceland
Haalda Natural Monument and Kettle Hole, Vatnajokull National Park, Iceland
Volcanic cinder rim in Coconino National Forest, Arizona, USA
A view of the boiling mud at Namafjall, Iceland
A view of the boiling mud at Namafjall, Iceland
A view of the boiling mud at Namafjall, Iceland
Eystrahorn mountain, South Iceland, Iceland, Europe
View of the mountains of Vestrahorn from black volcanic sand beach after snowfall, Stokksnes, South Iceland, Iceland, Polar Regions
View of the mountains of Vestrahorn from black volcanic sand beach, Stokksnes, South Iceland, Iceland, Polar Regions
A cyclist cycling on a road in the Timanfaya national park in Lanzarote in the Canary Islands, Spain
A Large Cactus in a lava field in Lanzarote in the Canary Islands, Spain
view of Volcanoes and the Volcanic landscape with the Atlantic Ocean in the Timanfaya national park in Lanzarote in the Canary Islands, Spain
Volcanic landscape with small plants in the Timanfaya national park in Lanzarote in the Canary Islands, Spain
Volcanic landscape of the Masaya caldera, Nicaragua's first national park, with craters and a'a blocky lava, Masaya, Nicaragua, Central America
Lake in the Furna do Enxofre, volcanic cave, Caldeira, Graciosa Natural Park, Graciosa Island, Azores, Portugal, Atlantic, Europe
Volcanic tunnel, Caldeira, Graciosa Natural Park, Graciosa Island, Azores, Portugal, Atlantic, Europe
View from the Mount Pico, Pico Island, Azores, Portugal, Atlantic, Europe
Arenal Volcano behind Laguna de Arenal (Arenal Lake), Alajuela Province, Costa Rica, Central America
Tourist camel train in red volcanic landscape, Timanfaya National Park, Yaiza, Lanzarote, Las Palmas Province, Canary Islands, Spain, Atlantic, Europe
Palm trees growing in volcanic landscape in the Valley of a Thousand Palms, Haria, Lanzarote, Las Palmas Province, Canary Islands, Spain, Atlantic, Europe
The Geldingadalir Volcanic Eruption, Fagradalsfjall, Iceland, Polar Regions
The Geldingadalir Volcanic Eruption, Fagradalsfjall, Iceland, Polar Regions
The Geldingadalir Volcanic Eruption, Fagradalsfjall, Iceland, Polar Regions
The Geldingadalir Volcanic Eruption, Fagradalsfjall, Iceland, Polar Regions