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Wilhelmina Bay iceberg, Antarctic Peninsula.
Wilhelmina Bay iceberg, Antarctic Peninsula.
Rock formation protruding from the frozen lake, Lake Baikal, Russia.
Chinstrap penguins on an iceberg near Aitcho Islands, Antarctic Peninsula.
Aerial view of Mount McKinley, Alaska.
Aerial view of Mount McKinley, Alaska.
Iceberg in Lago Argentino, Argentina.
Lake inside a crater, Iceland.
River in a basalt gorge, Iceland.
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.
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 - 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.
February 23, 2013 - Powerful night time explosive eruption of Sakurajima volcano, Japan. Trajectories of glowing incandescent volcanic bombs are visible.
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.
November 30, 2012 - Glowing Rerombola lava dome with incandescent rockfall deposit, Paluweh volcano, Flores, Indonesia.
November 25, 2012 - Extrusion of lava through lava plug on top of conduit leads to small glowing rockfalls. Batu Tara volcano, Komba Island, Indonesia.
November 25, 2012 - Explosive strombolian type eruption of Batu Tara volcano, Komba Island, Indonesia. Trajectories of red glowing lava bombs are visible.
November 26, 2012 - Explosive strombolian type eruption of Batu Tara volcano, Komba Island, Indonesia. Trajectories of red glowing lava bombs are visible.
April 1, 2012 - Lava flowing into Valle del Bove at Mount Etna Volcano, Italy, following paroxysmal eruption.
April 1, 2012 - Nighttime paroxysmal eruption at Mount Etna Volcano, Italy. Steam cloud rising as lava melts snow in Valle del Bove.
January 24, 2012 - Lava in crater glowing during blue hour on Nyamuragira Volcano, Kimanura Eruption.
January 22, 2012 - Glowing lava in crater illuminating gas cloud above Nyamuragira Volcano, Kimanura Eruption.
January 22, 2012 - Bush silhouetted against glow of lava in crater of Nyamuragira Volcano, Kimanura Eruption.
January 24, 2012 - Incandescent lava bombs expelled during a basaltic fissure eruption on Nyamuragira Volcano, Kimanura Eruption.
June 2006 - Ejection of lava during nighttime Strombolian eruption of Stromboli volcano, Aeolian Islands, Mediterranian Sea, Italy.
December 23, 2007 - Lava flow on the flank of Pacaya volcano, Guatemala.
November 2007 - Aerial view of crater lake in Tongariro volcanic complex, New Zealand.
November 2007 - Snow-covered Ngauruhoe cone, Mount Tongariro volcano, New Zealand.
November 2007 - Aerial view of 1886 basaltic plinian eruption fissure in rhyolite dome complex, Mount Tarawera volcano, New Zealand.
November 2007 - Aerial view of 1886 basaltic plinian eruption fissure in rhyolite dome complex, Mount Tarawera volcano, New Zealand.
November 2007 - Aerial view of White Island (Whakaari) volcano with central acidic crater lake, Bay of Plenty, New Zealand.
January 22, 2011 - Lava Lake in bottom of summit caldera, Nyiragongo Volcano, Democratic Republic of the Congo.
January 22, 2011 - Lava Lake with small lava fountains, Nyiragongo Volcano, Democratic Republic of the Congo.
January 21, 2011 - Small fountains in lava lake, Nyiragongo Volcano, Democratic Republic of the Congo.
January 21, 2011 - Active lava lake in pit crater, Nyiragongo Volcano, Democratic Republic of the Congo.
January 21, 2011 - Nighttime view of summit caldera with lava lake, Nyiragongo Volcano, Democratic Republic Congo.
January 21, 2011 - Nighttime view of lava lake in pit crater, Nyiragongo Volcano, Democratic Republic of the Congo.
January 21, 2011 - Nighttime view of lava lake in pit crater, Nyiragongo Volcano, Democratic Republic of the Congo.
May 21, 2008 - Lava bomb trajectories visible during nighttime vulcanian eruption of Anak Krakatau volcano, Sunda Strait, Java, Indonesia.
May 20, 2008 - Lava bomb trajectories visible during nighttime vulcanian eruption of Anak Krakatau volcano, Sunda Strait, Java, Indonesia.
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
Close-up of lava flow, Kilauea volcano, Big Island, Hawaii.
December 12, 2005 - Eruption of ash cloud from Santiaguito dome complex, Santa Maria volcano, Guatemala.
December 30, 2007 - Lava is flung high in the air during a nighttime eruption of Fuego volcano, Antigua, Guatemala.
November 2006 - Boulder rolling in lava flow at dusk during eruption of Mount Etna volcano, Sicily, Italy.
November 2006 - Lava flow at nightfall during eruption of Mount Etna volcano, Sicily, Italy.
November 2006 - Lava flow during eruption of Mount Etna volcano, Sicily, Italy.
February 10, 2008 - Dallol geothermal area, brine hot springs, Danakil Depression, Ethiopia.
January 30, 2011 - Lava lake illuminating walls of pit crater at nightfall, Erta Ale volcano, 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, potassium salt deposits formed by brine hot springs, Danakil Depression, Ethiopia.
Full moon over Ogilvie Mountains, Tombstone Park, Dempster Highway, Canada.
Northern lights over Hvitserkur, a spectacular rock formation in Iceland.
Northern lights over Stamsund fjord (Lofoten Islands), Norway.
Panoramic view of the Chiliques stratovolcano in Chile.
The Mont Blanc mountain as seen from the Torino refuge.
Fishing village (Lofoten Islands), Norway.
Small Norwegian village in winter (Lofoten Islands), Norway.
Lake Arhuaycocha, Peru.
Sunrise on Artesonraju mountain, Peru.
Base camp at Nevado Alpamayo & Nevado Quitaraju in Peru.
Goblin Garden west of Hamilili Point in Petrified Forest National Park, Arizona, United States of America, North America
View of Belém Tower (Torre de Belém) on a sunny day, Lisbon, Portugal, Europe
Petrified Waterfall at dusk, Hierve el Agua, San Lorenzo Albarradas, Oaxaca State, Mexico
Boulder pile in a valley leading to Dead Wash, Petrified Forest National Park, Arizona, United States of America
Panoramic of a huge boab tree (Adansonia gregorii), growing in Careening Bay, Kimberley, Western Australia, Australia, Pacific
Jacob's Ladder, Ben Lomond, Ben Lomond National Park, Tasmania, Australia, Pacific
Simos beach with turquoise water, Elafonisos island, Greece
Drone aerial view of Lake Polyfyto and mountain landscape at sunset, Kozani, Macedonia, Greece
Drone aerial view of Kriaritsi project area with abandoned roads in the south of Greece, Sithonia, Chalkidiki, Greece
Mountain landscape on the coast at sunset, Greece
Extraordinary sandstone rock structure called Dancing Rocks in the Sharaan Nature Reserve, AlUla, Medina Province, Saudi Arabia
An aerial view of the Song Kol lake area at sunrise, Kyrgyzstan
Aerial view over Ambato cape, Nosy Faly island and Nosy Be background , Republic of Madagascar, Indian Ocean
Rock formations in the oasis Tigui, 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
View of mountainous coastline North of the city seen from Reykjavik in winter, Reykjavik, Iceland
Aerial of a beautiful sand dune in the Tibesti Mountains, Chad
North Window, Elephant Butte on left, Cly Butte on right, Monument Valley Navajo Tribal Park, Utah, United States of America
The Thumb, Monument Valley Navajo Tribal Park, Utah, United States of America
West Mitten Butte, Monument Valley Navajo Tribal Park, Utah, United States of America
View of morning mist in Tjornin park and Lutheran Free Church on a sunny day in winter, Reykjavik, Iceland
Castillo Del San Salvador in foreground, Castillo Morro in the background, Havana Old Town, Havana, Cuba
The dramatic scenery in the volcanic highlands of northern Saint Anthony, Cape Verde
Continental drift between North American and Eurasian tectonic plates, Thingvellir National Park in winter, UNESCO, Western Region, Iceland
Coastguard cottages at Cuckmere Haven, and Seven Sisters cliffs beyond, South Downs National Park, Seaford, East Sussex, England, United Kingdom
Basalt boulders and cliffs, Johnson Canyon between Bainbridge Steel and Stone Dams, Kaibab National Forest, Arizona, United States of America
view of Volcanoes and the Volcanic landscape with the Atlantic Ocean in the Timanfaya national park in Lanzarote in the Canary Islands, Spain