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Irazu volcano, Irazu Volcano National Park, Cartago Province, Costa Rica
A view of the boiling mud at Namafjall, Iceland
View from Calderon Honda crater of lava rock ruins and volcanic cones of the north, Lajares, Fuerteventura, Canary Islands, Spain, Europe
View from Calderon Honda crater of lava rock ruins and volcanic cones of the north, Lajares, Fuerteventura, Canary Islands, Spain, Europe
Late afternoon light on the Crater Lake of the Crater Lake National Park, Oregon, United States of America, North America
Volcanic landscape of the Masaya caldera, Nicaragua's first national park, with craters and a'a blocky lava, Masaya, Nicaragua, Central America
Crater of the Poas volcano, San Jose, Costa Rica, Central America
Gran Cratere and Aeolian Islands view, Vulcano Island, Aeolian Islands, UNESCO World Heritage Site, north of Sicily, Italy, Mediterranean, Europe
People looking at view of Stromboli island from Gran crater rim, Vulcano Island, Aeolian Islands, UNESCO World Heritage Site, Sicily, Italy, Mediterranean, Europe
People walking through fumaroles on Volcano Gran crater rim, Vulcano Island, Aeolian Islands, UNESCO World Heritage Site, north of Sicily, Italy, Mediterranean, Europe
Gran Cratere (The Great Crater) and Aeolian Islands view, Vulcano Island, Aeolian Islands, UNESCO World Heritage Site, north of Sicily, Italy, Mediterranean, Europe
Hverfell Crater rising out of the Dimmuborgir Lava Field, Myvatn Region, Iceland, Polar Regions
Lava lake in the caldera of the Ambrym volcano, Vanuatu, Pacific
Smoking Ambrym volcano, Vanuatu, Pacific
Smoking Ambrym volcano, Vanuatu, Pacific
Smoking Ambrym volcano, Vanuatu, Pacific
View of Sunset Crater Volcano from the east slope of the Lenox Crater Trail, the dark gray soil is volcanic pumice, Arizona, United States of America, North America
Exploring a volcanic landscape on a footpath up Saxholl cinder cone and crater, Snaefellsjokull National Park, western Iceland, Polar Regions
Majestic crater of Hondo volcano (Calderon Hondo) with the ocean in background, Corralejo, Fuerteventura, Canary Islands, Spain, Atlantic, Europe
Sunrise above the Emerald Lakes, view from red crater, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific
Panoramic view, crater of Blue Lake and Tongariro Volcano at sunrise, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific
Emerald Lakes at sunrise, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific
View along the slope and hiking trail up towards the Red Crater Volcano, on Tongariro Alpine Crossing, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific
Close up of turquoise, vibrant Emerald Lake with steaming volcano on Tongariro Crossing, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific
Shore of the Emerald Lake, natural vibrant colour gradient with view on the Red Crater Volcano of Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific
Sunset Crater Volcano viewed from the forested slope of O'Leary Peak in northern Arizona.
Randecker Maar, former volcanic pipe, Ochsenwang, Swabian Alps, Baden-Wurttemberg, Germany, Europe
The peak of Mount Lokon, a stratovolcano with Tompaluan active crater on its flank, near Tomohon city, Gunung Lokon, Tomohon, North Sulawesi, Indonesia, Southeast Asia, Asia
Mount Mahawu, a stratovolcano and active 180m wide crater, with Lokon on the left, and Empung volcanoes beyond, Gunung Mahawu, Tomohon, North Sulawesi, Indonesia, Southeast Asia, Asia
Japanese warning sign on the Crater rim of Mount Naka, an active volcano, Mount Aso, Kyushu, Japan, Asia
Close up of turquoise, vibrant Emerald Lake with steaming volcano, Tongariro Crossing, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific
Turquoise and yellow green Emerald Lake in front of the Tongariro Volcano, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific
Lava flowing down mountain, Eyjafjallajokull volcano, Iceland, Polar Regions
Sulphur and fumarole smoke on volcano Gran crater, Vulcano Island, Aeolian Islands, UNESCO World Heritage Site, north of Sicily, Italy, Mediterranean, Europe
Geologists taking minerals samples on Gran Cratere (The Great Crater), Vulcano Island, Aeolian Islands, UNESCO World Heritage Site, north of Sicily, Italy, Mediterranean, Europe
Mount Mahawu, a stratovolcano and active 180m wide crater, with Lokon on the left, and Empung volcanoes beyond, Gunung Mahawu, Tomohon, North Sulawesi, Indonesia, Southeast Asia, Asia
Steaming fumaroles, sulphur and volcanic strata in Tompaluan active crater by Mount Lokon volcano near Tomohon city, Gunung Lokon, Tomohon, North Sulawesi, Indonesia, Southeast Asia, Asia
Japanese warning sign on the Crater rim of Mount Naka, an active volcano, Mount Aso, Kyushu, Japan, Asia
Japanese warning sign on the Crater rim of Mount Naka, an active volcano, Mount Aso, Kyushu, Japan, Asia
Sunrise at the volcano slopes Red Crater, Tongariror Crossing, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific
Emerald Lakes at sunrise, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific
Emerald lake on volcano slope, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific
View along the slope and hiking trail up towards the Red Crater Volcano, on Tongariro Alpine Crossing, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific
Shore of the Emerald Lake, natural vibrant colour gradient with view on the Red Crater Volcano of Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific
Crater of Ranu Kau, Rapa Nui (Easter Island), Chile, South America
Night view of lava flowing down from Eyjafjallajokull volcano, Iceland, Polar Regions
Sulphur and fumaroles smoke on volcano Gran Cratere, Vulcano Island, Aeolian Islands, UNESCO World Heritage Site, north of Sicily, Italy, Mediterranean, Europe
Red Crater and Mount Ngauruhoe in Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific
Crater of Ranu Kau, Rapa Nui (Easter Island), Chile, South America
Aerial of a Volcanic crater outside, Goma, Democratic Republic of Congo, Africa
Panoramic of Naples city lights and Gulf at dusk from Vesuvius, Naples, Campania, Italy, Europe
People walking on the edge of the crater of Mount Vesuvius, Province of Naples, Campania region, Italy, Europe
Steaming fumarole with sulphur deposits in Tompaluan active crater by Mount Lokon volcano near Tomohon city, Gunung Lokon, Tomohon, North Sulawesi, Indonesia, Southeast Asia, Asia
Sulphur for sale on the Crater rim on Mount Naka, an active volcano, Mount Aso, Kyushu, Japan, Asia
The crater of a volcano on the island of Santo Antao, Cape Verde Islands, Atlantic Ocean
Gran Cratere (The Large Crater), Vulcano Island, Aeolian Islands, UNESCO World Heritage Site, north of Sicily, Italy, Mediterranean, Europe
Mounts Lokon on the left, and Empung, with Tompaluan active crater on the saddle between, two volcanoes near Tomohon city, Gunung Lokon, Tomohon, North Sulawesi, Indonesia, Southeast Asia, Asia
Mount Lokon volcano with Tompaluan active crater on the saddle between next door Mount Empung, near Tomohon city, Gunung Lokon, Tomohon, North Sulawesi, Indonesia, Southeast Asia, Asia
The three emerald lakes and volcano landscape of the Tongariro Alpine Crossing, Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific
Wide angle view of an Emerald Lake in front of Red Crater Volcano in the Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific
Emerald Lake in Tongariro National Park, UNESCO World Heritage Site, North Island, New Zealand, Pacific
The Blue Crater Lake of Viti, which appeared after an eruption in 1875, part of the sulphurous geothermal area of Namafjall, Reykjahlio, Iceland
View of Stefanos Crater and mountains,Nisyros, Dodecanese, Greece, Europe
Miradouro do Cerrado das Freiras viewpoint on the huge volcanic crater that is now Lagoa Azul on Sao Miguel island, Azores Islands, Portugal, Atlantic, Europe
Grand Prismatic Spring and Excelsior Pool behind, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Aerial view of the crater of Hondo volcano (Calderon Hondo), Corralejo, Fuerteventura, Canary Islands, Spain, Atlantic, Europe
Steaming fumaroles, sulphur and volcanic strata in Tompaluan active crater by Mount Lokon volcano near Tomohon city, Gunung Lokon, Tomohon, North Sulawesi, Indonesia, Southeast Asia, Asia
Miradouro do Cerrado das Freiras viewpoint on the huge volcanic crater that is now Lagoa Azul on Sao Miguel island, Azores Islands, Portugal, Atlantic, Europe
Smoke rises from the active crater of Tungurahua Volcano that threatens the nearby resort town of Banos, Ambato Province, Central Highlands, Ecuador, South America
Viti Crater, Krafla, Iceland, Polar Regions
Panorama of the red sunrise on Red Crater Volcano and view of Mount Tongariro, North Island, New Zealand, Pacific
Volcanic crater before the smoking Kilauea Summit Lava Lake in the Hawaii Volcanoes National Park,UNESCO World Heritage Site, Big Island, Hawaii, United States of America, Pacific
Crater lake in the Poas volcano, San Jose, Costa Rica, Central America
Ubehebe Crater, a volcanic crater half a mile across and 600 feet deep, Death Valley National Park, California, United States of America, North America
An adult Eurasian golden plover (Pluvialis apricaria), near Eldborg Volcanic Crater, Iceland, Polar Regions
Sulphurous fumaroles and volcanic strata in Tompaluan active crater on the flank of Mount Lokon, a volcano near Tomohon city, Gunung Lokon, Tomohon, North Sulawesi, Indonesia, Southeast Asia, Asia Indonesia
Crater rim path on Mount Naka, an active volcano, Mount Aso, Kyushu, Japan, Asia
Crater rim on Mount Naka, an active volcano, Mount Aso, Kyushu, Japan, Asia
View over the volcanic crater Taburiente, La Palma, Canary Islands, Spain, Europe
View of Gran Cratere and Finicudi Island, Vulcano Island, Aeolian Islands, UNESCO World Heritage Site, north of Sicily, Italy, Mediterranean, Europe
Sulphur and fumarole smoke on volcano Gran crater, Vulcano Island, Aeolian Islands, UNESCO World Heritage Site, north of Sicily, Italy, Mediterranean, Europe
Crater rim path on Mount Naka, an active volcano, Mount Aso, Kyushu, Japan, Asia
Mount Bromo volcanic crater at sunrise, Bromo Tengger Semeru National Park, Java, Indonesia, Southeast Asia, Asia
Ngorongoro crater, UNESCO World Heritage Site, Tanzania, East Africa, Africa
Volcanic crater island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America
Moai in the Rano Raraku volcanic crater formed of consolidated ash (tuf), Easter Island, UNESCO World Heritage Site, Chile, South America
Eldborg volcanic crater, declared a Protected Natural Monument in 1974, Iceland, Polar Regions
Sunset from the volcanic crater of Pico del Teide, Teide National Park, Tenerife, Canary Islands, Spain, Europe
An aerial view of the Ngorongoro Crater, UNESCO World Heritage Site, Tanzania, East Africa, Africa
Heat haze in the sky at sunrise over majestic volcanoes, Corralejo, Fuerteventura, Canary Islands, Spain, Atlantic, Europe
El Sod Crater lake, Southern Ethiopia, Africa
The huge caldera of the Crater Lake National Park, Oregon, United States of America, North America
The huge caldera of the Crater Lake National Park, Oregon, United States of America, North America
View of the volcanic crater of Glassford Hill in Prescott Valley, Arizona, United States of America, North America
Mount Bromo volcanic crater at sunrise, Bromo Tengger Semeru National Park, Java, Indonesia, Southeast Asia, Asia
The caldera of the Crater Lake National Park, Oregon, United States of America, North America
A view of the volcanic crater and colourful crater lake on Santa Ana Volcano in Santa Ana, El Salvador, Central America
Crater rim on Mount Naka active volcano, Mount Aso, Kyushu, Japan, Asia
Aerial view of volcanoes and craters with the Atlantic Ocean in the background, Corralejo, Fuerteventura, Canary Islands, Spain, Atlantic, Europe
A view of the volcanic crater on Santa Ana Volcano in Santa Ana, El Salvador, Central America