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Uchisar, Cappadocia, Anatolia, Turkey, Asia Minor, Eurasia
Pinnacles of volcanic ash, Urgup, UNESCO World Heritage Site, Cappadocia, Anatolia, Turkey, Asia Minor, Eurasia
Interesting volcanic rock formations surrounding the town of Hanavave, Fatu Hiva, Marquesas, French Polynesia, South Pacific, Pacific
Mount Escriva, South Etna, Catania, Sicily, Italy, Europe
Rock climber attempts bouldering, and volcano in background, Conguillio National Park, Chile, South America
Multi-coloured crater lakes at summit of Kelimutu volcano, eastern Flores, Nusa Tenggara, Indonesia, Southeast Asia, Asia
Multi-coloured crater lakes at summit of Kelimutu volcano, eastern Flores, Nusa Tenggara, Indonesia, Southeast Asia, Asia
View from Dyrholaey towards the volcanic sand beach and rock stacks at Reynisdrangar, near the village of Vik i Myrdal, southern area, Iceland, Polar Regions
Typical Greek village perched on volcanic rock with white and blue houses and windmills, Santorini, Cyclades, Greek Islands, Greece, Europe
Mount Bromo volcano erupting at sunrise, sending volcanic ash high into the sky, East Java, Indonesia, Southeast Asia, Asia
Jungman Daepo columnar jointed lava formation, Seogwipo, Jeju Island, UNESCO World Heritage Site, South Korea, Asia
Basalt columns and a tourist ferry, Staffa Island, Inner Hebrides, Scotland, United Kingdom, Euorpe
Tourists exploring White Island Volcano, an active volcano in the Bay of Plenty, North Island, New Zealand, Pacific
Colourful volcanic rock, Mount Tarawera, Rotorua, South Auckland, North Island, New Zealand, Pacific
Mimosa rocks and rock pool in natural bay composed of volcanic Rhyolite rock, around 360 million years old, Mimosa Rocks National Park, New South Wales, Australia, Pacific
Puffin (Fratercula arctica), Heimaey Island, Vestmannaeyjar, volcanic Westman Islands, Iceland, Polar Regions
Mount Bromo volcanic eruption sending up an ash cloud, East Java, Indonesia, Southeast Asia, Asia
Valley of Ten Thousand Smokes with ignimbrite of 1912 eruption, Griggs volcano behind, Katmai National Park, Alaska, USA, North America
Volcaic ashes at Salto Truful, Volcan Llaima, Conguillio National Park, Lakes District, southern Chile, South America
Lava flowing from Kilauea Volcano, Hawaii Volcanoes National Park, UNESCO World Heritage Site, The Big Island, Hawaii, United States of America, North America
Atlantic Ocean waves crash onto black volcanic sand at Taganana, Tenerife, Canary Islands, Spain, Atlantic, Europe
Petroglyph National Monument, petroglyphs carved into volcanic rock by American Indians 400 to 700 years ago, New Mexico, United States of America, North America
Lassen Volcanic National Park, California, United States of America, North America
Tourists exploring White Island Volcano, an active volcano in the Bay of Plenty, North Island, New Zealand, Pacific
Volcanic peaks against deep blue sky, Jandia peninsula, Fuerteventura, Canary Islands, Spain, Atlantic, Europe
Kasha-Katuwe Tent Rock National Monument, tent like rock formations, from volcanic eruptions 6 to 7 million years ago, New Mexico, United States of America, North America
Kasha-Katuwe Tent Rock National Monument, tent like rock formations, from volcanic eruptions 6 to 7 million years ago, New Mexico, United States of America, North America
Valle de los Hongos (Mushroom Rocks) formed of volcanic ash, Creel, Chihuahua, Mexico, North America
Brown Bluff huge volcanic basalt, Tabarin Peninsula, Antarctica, Polar Regions
Panoramic view of tufa formations near the town of Uchisar, Cappadocia, Anatolia, Turkey, Asia Minor, Asia
Black sand beach at Ajuy, Fuerteventura, Canary Islands, Spain, Atlantic, Europe
Svartifoss waterfall in the Skaftafell National Park, Iceland, Polar Regions
People enjoying hiking to the volcanic Roque Nublo in the Nublo Rural Park in the centre of Gran Canaria, Canary Islands, Spain, Atlantic, Europe
Typical Greek village perched on volcanic rock with white and blue houses and windmills, Santorini, Cyclades, Greek Islands, Greece, Europe
Avacha volcano, lava plug formed in crater in 1991, Koryaksky volcano beyond, Kamchatka, East Siberia, Russia
Crested Pool, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Hellen Lake with Mount Lassen, 3187 m, in the background, Lassen Volcanic National Park, California, United States of America, North America
Volcanic boulders on Navajo sandstone, Grand Staircase-Escalante National Monument, Utah, United States of America, North America
Hot water bubbles produced by the volcanic rock, Dominica, West Indies, Caribbean, Central America
Vik black volcanic sand beach, Vik, Iceland, Polar Regions
Poas Volcano, Poas National Park, Costa Rica
Petrohue Falls and Osorno Volcano, Vicente Perez Rosales National Park, Chilean Lake District, Chile, South America
Winter sunset on black volcanic sand beach looking towards rock stacks of Reynisdrangar, Vik, South Iceland, Polar Regions
Rock Formations near Lily Beach, Christmas Island, Australia
El Teide, Teide National Park, UNESCO World Heritage Site, Tenerife, Canary Islands, Spain, Europe
Coloured rocks at the volcanic crater, Deception Island, South Shetland Islands, Antarctica, Polar Regions
Glacier on Brown Bluff huge volcanic basalt, Tabarin Peninsula, Antarctica, Polar Regions
Volcanic boulders on Navajo sandstone, Grand Staircase-Escalante National Monument, Utah, United States of America, North America
Looking towards the sea stacks of Reynisdrangar at sunset from the black volcanic sand beach at Vik i Myrdal, South Iceland, Iceland, Polar Regions
Brown water flowing from river fed with volcanic silt, Costa Rica
Inca natural bridge, volcanic sediment, Mendoza district, Argentina, South America
Tourists watching Mount Bromo volcanic eruption, East Java, Indonesia, Southeast Asia, Asia
The volcanic rock in the turquoise lagoon of Bora Bora, Society Islands, French Polynesia, Pacific
Rock Formations near Lily Beach, Christmas Island, Australia
Clouds obscure the coastal villages below the dark volcanic mountains of Tenerife's north east coast at sunset, Canary Islands, Spain, Atlantic Ocean, Europe
Birdman petroglyphs at Orongo ceremonial village on rim of crater Rano Kau, offshore lie bird islands of Motu Kao Kao, Motu Iri and Motu Nui, Easter Island, Chile, Pacific
Panoramic view of tufa formations, Devrent Valley (Pink Valley), near Zelve, Cappadocia, Anatolia, Turkey, Asia Minor, Asia
Sarakiniko volcanic rock formations at sunset, island of Milos, Cyclades, Greek Islands, Greece, Europe
Tabacon Hot Springs, Volcanic hot springs fed from the Arenal Volcano, Arenal, Costa Rica
Fog shrouds the volcanic mountains surrounding Cova de Paul on Santo Antao Island, Cape Verde, Africa
A view of the volcanic mountains surrounding Cova de Paul on Santo Antao Island, Cape Verde, Africa
El Tatio Geysers, at 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
El Tatio Geysers, at 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
Hot volcanic steam rising into monsoon clouds from Kawah Ratu (Queen's Crater) of Mount Tangkuban, Perahu, Bandung, Java, Indonesia, Southeast Asia, Asia
Hot volcanic steam rising into monsoon clouds from Kawah Ratu (Queen's Crater) of Mount Tangkuban, Perahu, Bandung, Java, Indonesia, Southeast Asia, Asia
Eldborg volcanic crater, declared a Protected Natural Monument in 1974, Iceland, Polar Regions
Lava and ash floes in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America
El Teide National Park, UNESCO World Heritage Site, Tenerife, Canary Islands, Spain, Atlantic, Europe
The endemic Galapagos marine iguana (Amblyrhynchus cristatus) sneezing excess salt from its nostrils in the Galapagos, UNESCO World Heritage Site, Ecuador, South America
The endemic Galapagos marine iguana (Amblyrhynchus cristatus) in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America
October 21, 2013 - Nighttime moonlit view of incandescent rockfall of glowing lava down flank of lava dome of Shiveluch Volcano, Kamchatka, Russia.
November 30, 2012 - Glowing Rerombola lava dome of Paluweh (or Rokatenda) volcano during eruption in 2012, Flores, Indonesia.
November 30, 2012 - Glowing Rerombola lava dome with incandescent rockfall deposit, Paluweh volcano, Flores, Indonesia.
November 28, 2012 - Explosive strombolian type eruption of Batu Tara volcano, Komba Island, Indonesia. Trajectories of red glowing lava bombs are visible against blue night sky.
November 27, 2012 - Explosive strombolian type eruption of Batu Tara volcano, Komba Island, Indonesia. Trajectories of red glowing lava bombs are visible.
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 26, 2012 - Powerful explosive strombolian type eruption of Batu Tara volcano, Komba Island, Indonesia. Trajectories of red glowing lava bombs are visible.
November 25, 2012 - Explosive strombolian type eruption of Batu Tara volcano, Komba Island, Indonesia. Trajectories of red glowing lava bombs are visible.
January 24, 2012 - Yellow sulphurous deposits resulting from degassing coating scoria cone formed during eruption on Nyamuragira Volcano, Democratic Republic of Congo.
November 2007 - Orange coloration in Champagne Pool hot spring, Wai-O-Tapu Geothermal area, Taupo Volcanic Zone, New Zealand.
November 2007 - Bubbles rising in Champagne Pool hot spring, Wai-O-Tapu Geothermal area, Taupo Volcanic Zone, 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 21, 2011 - Nighttime view of summit caldera with lava lake, Nyiragongo Volcano, Democratic Republic Congo.
November 2006 - Lava flowing from base of hornito during eruption of Mount Etna volcano, Sicily, Italy.
November 2006 - Lava flowing from base of hornito during eruption of Mount Etna volcano, Sicily, Italy.
February 11, 2008 - Dallol geothermal area, 1926 explosion crater by Black Mountain, Danakil Depression, Ethiopia.
Abra Bay, Sao Lourenco peninsula, Madeira island, Atlantic Ocean, Portugal
Woman standing on a rock overlooking the Wadi Shab, canyon near Tiwi, Sultanate of Oman, Arabian Peninsula
Svartifoss waterfall in the Skaftafell National Park, Iceland, Polar Regions
Landscape around Wakan village, Western Al Hajar Mountains, border South Batinah and Al Dakhiliyah Governorates, Oman, Arabian Peninsula
Pinnacle Rock on Bartolome Island in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America
The spectacular scenery on the island of Madeira, Atlantic Ocean, Portugal
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
Atlantic surf at Mosteiros, north west 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
Arid soil on edge of the smoky Erta Ale volcano from above, Danakil Depression, Afar Region, Ethiopia, Africa