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Cruise ship anchoring in the volcanic crater of Deception Island, South Shetland Islands, Antarctica, Polar Regions
Lake Toba (Danau Toba), the largest volcanic lake in the world, North Sumatra, Indonesia, Southeast Asia, Asia
Icelandic horses with volcanic mountains in the distance, South Iceland, Iceland, Polar Regions
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
Bubbling mud, Waiotapu Thermal Area, Rotorua, North Island, New Zealand, Pacific
Calm Atlantic Ocean landscape, Caleta de Famara, Lanzarote, Canary islands, Spain, Atlantic, Europe
Llamas and alpacas grazing, Tunupa, Bolivia, South America
Lassen Volcanic National Park, California, United States of America, North America
Icebergs on a black sand volcanic beach next to the Jokulsarlon glacial lake in Vatnajokull National Park in southeast Iceland, Polar Regions
Unfinished heads on outer south slopes of the crater, Rano Raraku, Easter Island, Chile
Castle Geyser, Upper Geyser Basin, Yellowstone National Park, Wyoming, USA
Valley of Ten Thousand Smokes with ignimbrite of 1912 eruption, Griggs volcano behind, Katmai National Park, Alaska, USA, North America
Volcanic Air Bubbles at Champagne Beach, Caribbean Sea, Dominica
Panoramic view of tufa formations near the town of Uchisar, Cappadocia, Anatolia, Turkey, Asia Minor, Asia
Volcano and wind swept trees, Lake District, Puyehue National Park, southern Chile, 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
Cruise ship anchoring in the volcanic crater of Deception Island, South Shetland Islands, Antarctica, Polar Regions
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
Overlooking recent lava flow on Heimaey Island, Iceland, Polar Regions
Svartifoss waterfall in the Skaftafell National Park, Iceland, Polar Regions
Wai-O-Tapu Thermal Wonderland, Rotorua, North Island New Zealand, Pacific
Cacti on Isla de los Pescadores, Volcan Tunupa and the salt flats, Salar de Uyuni, Southwest Highlands, Bolivia, South America
Brown Bluff huge volcanic basalt, Tabarin Peninsula, Antarctica, 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
Dramatic light with view of the mountains of Vestrahorn from black volcanic sand beach at sunset, Stokksnes, South Iceland, Iceland, Polar Regions
Steaming volcanic mud pools, Rincon de la Vieja National Park at foot of Rincon Volcano, Gaunacaste, Costa Rica
Very green acid crater in the Wai-O-Tapu Thermal Wonderland, Waiotapu, North Island, New Zealand, Pacific
Geothermal volcanic area in the Wai-O-Tapu Thermal Wonderland, Waiotapu, North Island, New Zealand, Pacific
Volcano, Vulcan Agua, Antigua, Guatemala, Central America
Darvaza Gas crater, Turkmenistan, Central Asia, Asia
Nordic Church, Heimaey Island, Vestmannaeyjar, volcanic Westman Islands, Iceland, Polar Regions
Typical Greek village perched on volcanic rock with white and blue houses and windmills, Santorini, Cyclades, Greek Islands, Greece, Europe
Cacti on Isla de los Pescadores, Volcan Tunupa and the salt flats, Salar de Uyuni, Southwest Highlands, Bolivia, South America
Valle de los Hongos (Mushroom Rocks) formed of volcanic ash, Creel, Chihuahua, Mexico, North America
Icebergs on a black sand volcanic beach next to the Jokulsarlon glacial lake in Vatnajokull National Park in southeast Iceland, Polar Regions
Pieces of glacier ice washed up on black volcanic sand beach at sunrise, near Jokulsarlon Glacial Lagoon, South Iceland, Polar Regions
Glacial icebergs washed up from North Atlantic Ocean onto volcanic sand beach near Jokulsarlon, South Iceland, Polar Regions
Black volcanic sand on six mile beach near Limbe, southern Cameroon, Africa
Volcanic Air Bubbles at Champagne Beach, Caribbean Sea, Dominica
Mount Rainier, volcanic peak, and Emmons Glacier from summit icefield, Cascade Mountains, Washington State, United States of America (U.S.A.), North America
Coffee plantations on the slopes of the Poas Volcano, near San Jose, Costa Rica
Frying Pan Lake,the largest hot spring in the world, Waimangu Volcanic Valley, North Island, New Zealand, Pacific
Road leading to Mount Ruapehu, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific
Aerial of the crater of Mount Ngauruhoe, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific
Crested Pool, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Darvaza Gas crater, Turkmenistan, Central Asia, Asia
Caldeira and Bromo at 2329 m, and Semeru at 3676m, volcanoes on Java, Indonesia, Southeast Asia, Asia
Hellen Lake with Mount Lassen, 3187 m, in the background, Lassen Volcanic National Park, California, United States of America, North America
View of the mountains of Vestrahorn from black volcanic sand beach at sunset, Stokksnes, South Iceland, Polar Regions
Avacha volcano, lava plug formed in crater in 1991, Koryaksky volcano beyond, Kamchatka, East Siberia, Russia
Rano Raraku, moai on inner slopes of volcanic crater, Easter Island, Chile, Pacific
Volcanic Gas Bubbles in Coral Reef, Ambon, Moluccas, Indonesia
Icebergs at sunrise on Jokulsarlon Beach, a black volcanic sand beach in South East Iceland, Iceland, Polar Regions
Teide National Park, Mount Teide (Pico de Teide), Tenerife, Canary Islands, Spain
Arenal Volcano, Arenal, Costa Rica
The colourful multi hued Champagne Pool, Wai-O-Tapu Thermal Wonderland, Waiotapu, North Island, New Zealand, Pacific
Observatory, Mauna Kea, Big Island, Hawaii, United States of America, North America
Fountaining lava from Eyjafjallajokull volcano, Iceland, Polar Regions
Ice shelfs at the entrance of the volcanic island of Deception Island, South Shetland Islands, Antarctica, Polar Regions
Caldeira and Bromo at 2329 m, and Semeru at 3676 m, volcanoes on Java, Indonesia, Southeast Asia, Asia
Glassy pieces of ice on volcanic black sand beach at sunrise, near Jokulsarlon Lagoon, South Iceland, Polar Regions
View of the mountains of Vestrahorn from black volcanic sand beach at sunset, Stokksnes, South Iceland, Iceland, Polar Regions
Mt Ngauruhoe volcano, beyond Red Crater, in the Tongariro National Park, Taupo, North Island, New Zealand
Penstemon flowers, Mount St. Helens, Mount St. Helens National Volcanic Monument, Washington state, United States of America, North America
Sumeru volcano erupting, island of Java, Indonesia, Southeast Asia, Asia
Poas Volcano, Poas National Park, Costa Rica
Geoactive thermal pool, Wai-O-Tapu Thermal Wonderland, Waiotapu, North Island, New Zealand, Pacific
Black volcanic sand beach at Sao Filipe, Fogo (Fire), Cape Verde Islands, Atlantic Ocean, Africa
Volcanic boulders on Navajo sandstone, Grand Staircase-Escalante National Monument, Utah, United States of America, North America
Boiling mudpools in geothermal area on Reykjanes Peninsula, near Keflavik, Iceland, Polar Regions
Vik black volcanic sand beach, Vik, Iceland, Polar Regions
Brown Bluff huge volcanic basalt, Tabarin Peninsula, Antarctica, Polar Regions
Panoramic view of Vestrahorn Mountain range reflecting in shallows of black volcanic beach, Stokksnes, South Iceland, Polar Regions
Vestrahorn Mountain range and black volcanic beach, Stokksnes, South Iceland, Polar Regions
Volcanic Air Bubbles at Champagne Beach, Caribbean Sea, Dominica
Hverfell (Hverfjall) ash crater in north of the country, Myvatyn (Myvatn) Nature Reserve, Iceland
Villarrica Volcano, Villarrica National Park, Pucon, Chile, South America
Volcano of Parinacola, 6348m high, reflected in water of Chungara Lake, Parque Nacional de Lauca, Chile, South America
Observatory, Mauna Kea, Big Island, Hawaii, United States of America, North America
Hot water bubbles produced by the volcanic rock, Dominica, West Indies, Caribbean, Central America
Quilotoa Loop, volcanic crater lake, Ecuador, South America
Pieces of glacier ice washed up on black volcanic sand beach at sunrise, near Jokulsarlon Glacial Lagoon, South Iceland, Polar Regions
Winter sunset on black volcanic sand beach looking towards rock stacks of Reynisdrangar, Vik, South Iceland, Polar Regions
Volcanic Air Bubbles at Champagne Beach, Caribbean Sea, Dominica
Black volcanic sand beach at Sao Filipe, Fogo (Fire), Cape Verde Islands, Atlantic Ocean, Africa
Darvaza Gas crater, Turkmenistan, Central Asia, Asia
El Teide, Teide National Park, UNESCO World Heritage Site, Tenerife, Canary Islands, Spain, Europe
Overlooking recent lava flow on Heimaey Island, Iceland, Polar Regions
Petrohue Falls and Osorno Volcano, Vicente Perez Rosales National Park, Chilean Lake District, Chile, South America
Caldeira and Bromo, 2329 m, and Semeru, 3676 m, two volcanoes on Java, Indonesia, Southeast Asia, Asia
Volcanic crater and moss-covered lava fields on the Snaefellsness Peninsula, Iceland, Polar Regions
Evening view over the Caldera from Oia with blue domed church and distant volcanic cliffs, Santorini, Greek Islands, Greece, Europe
Volcanic ash (tephra) crater Hverfjall (Hverfell), 140m deep, more than 1 km across, at Myvatn, northern Iceland, Iceland, Polar Regions
The Volcanic Tongariro Crossing, UNESCO World Heritage Site, North Island, New Zealand, Pacific
Pretty black sand volcanic beach, Epi island, Shepherd Islands, Vanuatu, Pacific
Iceberg at sunrise on Jokulsarlon Beach, a black volcanic sand beach in South East Iceland, Iceland, Polar Regions
Cruise ship anchoring in the volcanic crater of Deception Island, South Shetland Islands, Antarctica, Polar Regions
Coloured rocks at the volcanic crater, Deception Island, South Shetland Islands, Antarctica, Polar Regions
Volcanic boulders on Navajo sandstone, Grand Staircase-Escalante National Monument, Utah, United States of America, North America