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Eruption and lava flow from the Monti Calcarazzi fissure on the southern flank of Mt Etna in 2001, the flow threatened the town of Nicolosi below, Mt Etna, Sicily, Italy
Koryaksky volcano, andesitic cone seen from shoulder of Avacha volcano, Kamchatka, East Siberia, Russia
Koryaksky volcano seen beyond walkers on crater rim of Avacha volcano, Kamchatka, East Siberia, Russia
Tourists ascending recent volcanic cone, Penguin Island, South Shetland Islands, Antarctica, Polar Regions
View of active volcano from helicopter, Big Island, Hawaii, Hawaiian Islands, United States of America (U.S.A.), North America
Ash, rock and sulphur at the smoking summit of 3350m high volcano Mount Etna during an active phase, Mount Etna, UNESCO World Heritage Site, Sicily, Italy, Mediterranean, Europe
Active lava eruption on the Tolbachik volcano, Kamchatka, Russia, Eurasia
Boiling mud at an active andesite stratovolcano on White Island, off the east side of North Island, New Zealand, Pacific
Malpais badlands volcanic landscape looking northeast from Los Hervideros, Parque Natural Los Volcanes, near Yaiza, Lanzarote, Canary islands, Spain, Atlantic, Europe
Volcanic landscape of solidified lava flows and distant cone volcanoes, near Yaiza, 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
Kawah Ijen and its turquoise acid crater lake, Java, Indonesia, Southeast Asia, Asia
Landscape, Isla Ometepe, Volcan Concepcion, Lago de Nicaragua, Nicaragua, Central America
Cresting the peak of Pacaya Volcano in Guatemala City, Guatemala, Central America
Etna South, Catania, Sicily, Italy, Europe
An active andesite stratovolcano on White Island, off the east side of North Island, New Zealand, Pacific
Japanese warning sign on the crater rim of Mount Naka active volcano, Mount Aso, Kyushu, Japan, Asia
Cresting the peak of Pacaya Volcano in Guatemala City, Guatemala, Central America
Pinatubo volcano, Luzon, Philippines, Southeast Asia, Asia
Starry night sky over majestic mountain landscape with Milky Way visible and rocky terrain in the foreground, Teide National Park, UNESCO World Heritage Site, Tenerife, Canary Islands, Spain, Atlantic, Europe
Rocky volcanic badlands (malpais) landscape, Malpais Grande National Park, Fuerteventura, Canary Islands, Spain, Atlantic, Europe
Food being cooked on volcanic grill at visitor centre, Parque Nacional de Timanfaya, national park, Lanzarote, Canary Islands, Atlantic, Europe
Walkway over lava field, Timanfaya Volcano Interpretation and Visitors' Centre, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Walkway over lava field, Timanfaya Volcano Interpretation and Visitors' Centre, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Cresting the peak of Pacaya Volcano in Guatemala City, Guatemala, Central America
Cresting the peak of Pacaya Volcano in Guatemala City, Guatemala, Central America
Trekking, Pinatubo volcano, Luzon, Philippines, Southeast Asia, Asia
Kawah Ijen volcano slope (Ijen crater), Banyuwangi, East Java, Indonesia, Southeast Asia, Asia
Tourists walking down from top of El Teide volcano to Teide Cable Car in early moning, Tenerife, Canary Islands, Spain, Atlantic, Europe
Active lava stream, Tolbachik volcano, Kamchatka, Russia, Eurasia
Sulphur miners working in the crater at Kawah Ijen, Java, Indonesia, Southeast Asia, Asia
Kawah Ijen volcano (Ijen crater and lake), Banyuwangi, East Java, Indonesia, Southeast Asia, Asia
The Lava Store at the base of Pacaya Volcano in Guatemala City, Guatemala, Central America
Active lava eruption on the Tolbachik volcano, Kamchatka, Russia, Eurasia
Scenic view of a tranquil volcanic landscape with clear blue sky in Tenerife, Canary Islands, Spain, Atlantic, Europe
Panorama of sulphur worker appearing out of toxic fumes at Kawah Ijen volcano, East Java, Indonesia, Southeast Asia, Asia
Pinatubo volcano, Luzon, Philippines, Southeast Asia, Asia
Tourists exploring White Island Volcano, an active volcano in the Bay of Plenty, North Island, New Zealand, Pacific
Scenic view of a small town with traditional buildings against a backdrop of mountains under a clear blue sky in Tenerife, Canary Islands, Spain, Atlantic, Europe
Mud being ejected from the caldera floor of an active andesite stratovolcano on White Island, North Island, New Zealand, Pacific
Visitors to an active andesite stratovolcano on White Island, off the East side of North Island, New Zealand, Pacific
Kawah Ijen volcano ridge (Ijen crater), Banyuwangi, East Java, Indonesia, Southeast Asia, Asia
Visitors watching mud being ejected from the caldera floor of an active andesite stratovolcano on White Island, North Island, New Zealand, Pacific
Etna South, Mount Etna, UNESCO World Heritage Site, Catania, Sicily, Italy, Europe
View from the San Pedro volcano of San Pedro and Lago Atitlan (Lake Atitlan), Guatemala, Central America
Active lava stream, Tolbachik volcano, Kamchatka, Russia, Eurasia
Multi-coloured crater lakes at summit of Kelimutu volcano, eastern Flores, Nusa Tenggara, Indonesia, Southeast Asia, Asia
Quilotoa, a water-filled caldera and the most western volcano in the Ecuadorian Andes, Ecuador, South America
Tourists exploring White Island Volcano, an active volcano in the Bay of Plenty, North Island, New Zealand, Pacific
Rock climber attempts bouldering, and volcano in background, Conguillio National Park, Chile, South America
Active lava eruption on the Tolbachik volcano, Kamchatka, Russia, Eurasia
Steaming fumarole on the Gorely volcano, Kamchatka, Russia, Eurasia
An active andesite stratovolcano on White Island, off the east side of North Island, New Zealand, Pacific
Mount Rinjani caldera, Segara Anak lake and the active volcano, Gunung Baru, Lombok, Indonesia, Southeast Asia, Asia
Mount Bromo volcanic eruption sending up an ash cloud, East Java, Indonesia, Southeast Asia, Asia
Tourists exploring White Island Volcano, an active volcano in the Bay of Plenty, North Island, New Zealand, Pacific
Steaming fumarole on the Gorely volcano, Kamchatka, Russia, Eurasia
Mud being ejected from the caldera floor of an active andesite stratovolcano on White Island, North Island, New Zealand, Pacific
Smoking Volcano Tavurvur, Rabaul, East New Britain, Papua New Guinea, Pacific
Mount Escriva, South Etna, Catania, Sicily, Italy, Europe
Lava flowing from Kilauea Volcano, Hawaii Volcanoes National Park, UNESCO World Heritage Site, The Big Island, Hawaii, United States of America, North America
Blue glacial water in a glacier on Mutnovsky volcano, Kamchatka, Russia, Eurasia
An active andesite stratovolcano on White Island, off the east side of North Island, New Zealand, Pacific
Crater rim on Mount Naka active volcano, Mount Aso, Kyushu, Japan, Asia
Mount Bromo volcano erupting at sunrise, sending volcanic ash high into the sky, 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
The caldera floor of an active andesite stratovolcano on White Island, North Island, New Zealand, Pacific
Multi-coloured crater lakes at summit of Kelimutu volcano, eastern Flores, Nusa Tenggara, Indonesia, Southeast Asia, Asia
Tourist exploring White Island Volcano, an active volcano in the Bay of Plenty, North Island, New Zealand, Pacific
Acid Crater Lake, White Island Volcano, an active volcano in the Bay of Plenty, North Island, New Zealand, Pacific
Dramatic view of mountains, extinct volcanos and glaciers, from Dyrholaey, near Vik Y Myrdal, South Iceland, Polar Regions
Poas Volcano, Poas National Park, Costa Rica
Tourist looking at smoking fumaroles on Mutnovsky volcano, Kamchatka, Russia, Eurasia
Active magma in a stream below the Tolbachik volcano, Kamchatka, Russia, Eurasia
Cold lava after an eruption of Tolbachik volcano, Kamchatka, Russia, Eurasia
Blue glacial water in a glacier on Mutnovsky volcano, Kamchatka, Russia, Eurasia
Crater at the top of Sibayak Volcano, an active volcano at Berastagi (Brastagi), North Sumatra, Indonesia, Southeast Asia, Asia
A woman started at Quilotoa, a water-filled caldera and the most western volcano in the Ecuadorian Andes, Ecuador, South America
Avacha volcano, lava plug formed in crater in 1991, Koryaksky volcano beyond, Kamchatka, East Siberia, Russia
Active magma in a stream below the Tolbachik volcano, Kamchatka, Russia, Eurasia
Smoking fumaroles on Mutnovsky volcano, Kamchatka, Russia
Visitors at an active andesite stratovolcano on White Island, North Island, New Zealand
Tourists exploring White Island Volcano, an active volcano in the Bay of Plenty, North Island, New Zealand, Pacific
Acid Crater Lake, White Island Volcano, an active volcano in the Bay of Plenty, North Island, New Zealand, Pacific
The 5126m summit of Illiniza Norte Volcano, Pichincha Province, Ecuador, South America
Mount Bromo volcano erupting before sunrise, East Java, Indonesia, Southeast Asia, Asia
Tolbachik volcano, Kamchatka, Russia, Eurasia
Alcantara River running through the Alcantara Gorge on Mount Etna Volcano, UNESCO World Heritage Site, Sicily, Italy, Europe
Little sand mounds on a glacier field on Mutnovsky volcano, Kamchatka, Russia, Eurasia
Tourists standing by smoking fumaroles on Mutnovsky volcano, Kamchatka, Russia, Eurasia
Tourists exploring White Island Volcano, an active volcano in the Bay of Plenty, North Island, New Zealand, Pacific
Cold lava after an eruption of Tolbachik volcano, Kamchatka, Russia, Eurasia
Active lava stream, Tolbachik volcano, Kamchatka, Russia, Eurasia
Tolbachik volcano, Kamchatka, Russia, Eurasia
El Teide, Teide National Park, UNESCO World Heritage Site, Tenerife, Canary Islands, Spain, Europe
Tourists standing by smoking fumaroles on Mutnovsky volcano, Kamchatka, Russia, Eurasia
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
Top of Sibayak Volcano at sunrise, Berastagi (Brastagi), North Sumatra, Indonesia, Southeast Asia, Asia
Petrohue Falls and Osorno Volcano, Vicente Perez Rosales National Park, Chilean Lake District, Chile, South America