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Old Windmill with volcanoes in background near Tefia, Fuerteventura, Canary Islands, Spain
Tourists ascending recent volcanic cone, Penguin Island, South Shetland Islands, Antarctica, Polar Regions
T'ai chi exercises at dawn, Agua volcano, Antigua, Guatemala, Central America
View of active volcano from helicopter, Big Island, Hawaii, Hawaiian Islands, United States of America (U.S.A.), North America
Moyogalpa port and Conception volcano, Ometepe island, Nicaragua, Central America
Observatory, Mauna Kea, Big Island, Hawaii, United States of America, North America
Mauna Kea, Big Island, Hawaii, United States of America, North America
Conception Volcano, Ometepe Island, Nicaragua, Central America
An active andesite stratovolcano on White Island, off the east side of North Island, New Zealand, Pacific
Boiling mud at an active andesite stratovolcano on White Island, off the east side of North Island, New Zealand, Pacific
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
The small port of Moyogalpa on Ometepe Island in Lake Nicaragua, Nicaragua, Central America
Volcanic landscape of solidified lava flows and distant cone volcanoes, near Yaiza, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Sign for Parque Nacional de Timanfaya, national park, designed by Cesar Manrique, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Acid Crater Lake, White Island Volcano, an active volcano in the Bay of Plenty, North Island, New Zealand, Pacific
Volcano cone and black volcanic soil farmland, Monta Tinache, near Tinajo, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Graveyard and the Concepcion volcano on Ometepe island, Lake Nicaragua, Nicaragua, Central America
Mount Ruapehu, Ngauruhoe and Tongariro (active volcanoes) from Lake Taupo, North Island, New Zealand, Pacific
Volcano eruptions at the Volcano Yasur, Island of Tanna, Vanuatu, South Pacific, Pacific
Tree house in a Banyan tree below the Volcano Yasur, Island of Tanna, Vanuatu, South Pacific, Pacific
Tree house in a Banyan tree below the Volcano Yasur, Island of Tanna, Vanuatu, South Pacific, Pacific
View over Shark Bay below Volcano Yasur, Island of Tanna, Vanuatu, South Pacific, Pacific
Aerial of Taupo Town and Mount Tauhara, Waikato River and Lake Taupo, North Island, New Zealand, Pacific
Geologists taking mineral samples on Gran Cratere (The Great Crater), Vulcano Island, Aeolian Islands, UNESCO World Heritage Site, Sicily, Italy, Mediterranean, Europe
View of Aeolian Islands archipelago from Gran Cratere, Vulcano Island, Aeolian Islands, UNESCO World Heritage Site, Sicily, Italy, Mediterranean, Europe
People walking on Gran Cratere rim, Vulcano Island, Aeolian Islands, UNESCO World Heritage Site, Sicily, Italy, Mediterranean, Europe
People walking on Gran Cratere rim, Vulcano Island, Aeolian Islands, UNESCO World Heritage Site, Sicily, Italy, Mediterranean, Europe
Food being cooked on volcanic grill at visitor centre, Parque Nacional de Timanfaya, national park, Lanzarote, Canary Islands, Atlantic, Europe
View over whitewashed houses to Monte Corona volcano cone, village of Haria, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Nisyros volcano, high angle view, Nisyros Island, Dodecanese Islands, Greek Islands, Greece, Europe
Nisyros volcano view, Nisyros Island, Dodecanese Islands, Greek Islands, Greece, Europe
Nikia village and Nisyros volcano in the distance, high anlgle view, Nisyros Island, Dodecanese Islands, Greek Islands, Greece, Europe
Nisyros volcano view, Nisyros Island, Dodecanese Islands, Greek Islands, Greece, Europe
Nisyros volcano, Nisyros Island, Dodecanese Islands, Greek Islands, Greece, Europe
Nisyros volcano, Nisyros Island, Dodecanese Islands, Greek Islands, Greece, Europe
View from Mirador del Rio of ferry ship approaching Caleta del Sebo, La Graciosa island, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Yasur volcano, active volcano on island of Tanna, Vanuatu, South Pacific islands, Pacific
Volcano Concepcion, Isla de Ometepe, Ometepe Island, Lake Nicaragua, Nicaragua, Central America
View of Aeolian Islands archipelago from Gran Cratere, Vulcano Island, Aeolian Islands, UNESCO World Heritage Site, Sicily, Italy, Mediterranean, Europe
Visitors to an active andesite stratovolcano on White Island, off the East side of North Island, New Zealand, Pacific
Volcanic crater (rano), Rano Kau, Easter Island, Chile
Tourists exploring White Island Volcano, an active volcano in the Bay of Plenty, North Island, New Zealand, Pacific
Mud being ejected from the caldera floor of an active andesite stratovolcano on White Island, North Island, New Zealand, Pacific
Mauna Kea, Big Island, Hawaii, United States of America, North America
Geologists taking mineral samples on Gran Cratere (The Great Crater), Vulcano Island, Aeolian Islands, UNESCO World Heritage Site, Sicily, Italy, Mediterranean, Europe
Visitors watching mud being ejected from the caldera floor of an active andesite stratovolcano on White Island, North Island, New Zealand, Pacific
Mud being ejected from the caldera floor of an active andesite stratovolcano on White Island, North Island, New Zealand, Pacific
An active andesite stratovolcano on White Island, off the east side of North Island, New Zealand, Pacific
An active andesite stratovolcano on White Island, off the east side of North Island, New Zealand, Pacific
Volcano eruptions at the Volcano Yasur, Island of Tanna, Vanuatu, South Pacific, Pacific
Tourists exploring White Island Volcano, an active volcano in the Bay of Plenty, North Island, New Zealand, Pacific
The caldera floor of an active andesite stratovolcano on White Island, North Island, New Zealand, Pacific
Tourists exploring White Island Volcano, an active volcano in the Bay of Plenty, North Island, New Zealand, Pacific
Lava flowing from Kilauea Volcano, Hawaii Volcanoes National Park, UNESCO World Heritage Site, The Big Island, Hawaii, United States of America, North America
Hikers are dwarfed by the volcanic Mount Ngauruhoe on the Tongariro Crossing trail, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific
Acid Crater Lake, White Island Volcano, an active volcano in the Bay of Plenty, North Island, New Zealand, Pacific
Mount Ngauruhoe Volcano summit climb, an extra on the Tongariro Alpine Crossing, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific
Volcano, Vulcan Agua, Antigua, Guatemala, Central America
Visitors at an active andesite stratovolcano on White Island, North Island, New Zealand
Tourist exploring White Island Volcano, an active volcano in the Bay of Plenty, North Island, New Zealand, Pacific
Crater of Kelimutu Volcano, 1640m, Flores Island, Indonesia, Southeast Asia, Asia
Canary Island Pines at Teide National Park, Pinus canariensis, Tenerife, Spain
Observatory, Mauna Kea, Big Island, Hawaii, United States of America, North America
Volcano Concepcion, Isla de Ometepe, Ometepe Island, Nicaragua, Central America
Acid Crater Lake, White Island Volcano, an active volcano in the Bay of Plenty, North Island, New Zealand, Pacific
Tourists looking at the Volcano crater at Deception Island, South Shetland Islands, Antarctica, Polar Regions
White Island (Whakaari) active marine volcano in the Bay of Plenty, North Island, New Zealand, Pacific
Mt Ngauruhoe volcano, beyond Red Crater, in the Tongariro National Park, Taupo, North Island, New Zealand
Canary Island Pines at Teide National Park, Pinus canariensis, Tenerife, Spain
Sumeru volcano erupting, island of Java, Indonesia, Southeast Asia, Asia
Observatory, Mauna Kea, Big Island, Hawaii, United States of America, North America
Tourists exploring White Island Volcano, an active volcano in the Bay of Plenty, North Island, New Zealand, Pacific
Visitors at an active andesite stratovolcano on White Island, North Island, New Zealand, Pacific
Tourists exploring White Island Volcano, an active volcano in the Bay of Plenty, North Island, New Zealand, Pacific
Volcano Caldera de Gairia, Tuineje, Fuerteventura, Canary Islands, Spain, Europe
An active andesite stratovolcano on White Island, off the east side of North Island, New Zealand, Pacific
Volcano Caldera de Gairia, Tuineje, Fuerteventura, Canary Islands, Spain, Europe
Tourists exploring White Island Volcano, an active volcano in the Bay of Plenty, North Island, New Zealand, Pacific
White Island (Whakaari) active marine volcano in the Bay of Plenty, North Island, New Zealand, Pacific
Volcano crater at Deception Island, South Shetland Islands, Antarctica, Polar Regions
Wolf Volcano at Isabela Island, Galapagos, Ecuador
Island view from Puyehue volcano, Lago Puyehue (Lake Puyehue), Chile, South America
Mt Ngauruhoe, 2291m, youngest of the three volcanoes in the Tongariro National Park, North Island, New Zealand
Volcanic peaks of the Pitons, Soufriere Bay, St. Lucia, Caribbean, West Indies, Central America
Volcanic cones on top of Mauna Kea, Big Island, Hawaii, United States of America, Pacific
A view of the small bay and the extinct volcano on the south side of Isla Coronado, Baja California Sur, Sea of Cortez, Mexico, North America
Lava flows from Teneguia volcano, La Palma, Canary Islands, Spain, Atlantic Ocean, Europe
The 1610m active Volcan Concepcion, greater of two volcanoes that form popular Omotepe Island (Isla Omotepe), Lake Nicaragua, Nicaragua, Central America
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.
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 26, 2012 - 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.
November 26, 2012 - Explosive strombolian type eruption of Batu Tara volcano, Komba Island, Indonesia. Trajectories of red glowing lava bombs are visible.
November 2007 - Aerial view of White Island (Whakaari) volcano with central acidic crater lake, Bay of Plenty, New Zealand.
Close-up of lava flow, Kilauea volcano, Big Island, Hawaii.