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Volcanic rock formations, Kleftiko, island of Milos, Cyclades, Greek Islands, Greece, Europe
Arenal Volcano from the La Fortuna side, Costa Rica
Arenal Volcano from the La Fortuna side, Costa Rica
Arenal Volcano from the La Fortuna side, Costa Rica
Arenal Volcano from the La Fortuna side, Costa Rica
Arenal Volcano from the La Fortuna side, Costa Rica
Arenal Volcano from the La Fortuna side, Costa Rica
Arenal Volcano from the La Fortuna side, Costa Rica
Arenal Volcano near La Fortuna, Costa Rica
Female tourist on boardwalk by the Morning Glory Pool, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Village of Penelokan with the volcano of Mount Agung behind, Bali, Indonesia, Southeast Asia, Asia
Aloe vera plants commercial cultivation, Tiscamanita, Fuerteventura, Canary Islands, Spain, Atlantic, Europe
Scenic coastal landscape with lush greenery, agricultural fields, and a clear blue sky in Tenerife, Canary Islands, Spain, Atlantic, Europe
Waterfall on the northern slopes of 3726m Mt Rinjani volcano, near Senaru, Lombok, Indonesia
Arenal Volcano from the Sky Tram, Costa Rica
Grape vines growing in black volcanic soil in protected enclosed pits, La Geria, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Volcanic landscape of solidified lava flows and distant cone volcanoes, near Yaiza, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Starry night sky over a volcanic landscape with a colorful twilight gradient in Tenerife, Canary Islands, Spain, Atlantic, Europe
Footpath trail from Gran Valle to Cofete, Jandia peninsula, Fuerteventura, Canary Islands, Spain, Atlantic, Europe
Close-up of plant, Cueva de Los Verdes, cave tourist attraction in lava pipe tunnel, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Desert road stretching into the distance with rocky mountains under a clear blue sky in Tenerife, Canary Islands, Spain, Atlantic, Europe
Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Aloe vera plants growing in field, Oliva, Fuerteventura, Canary Islands, Spain, Atlantic, Europe
View from Mirador del Rio of ferry ship approaching Caleta del Sebo, La Graciosa island, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Morning Glory Pool, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Sandy beach of Playa de las Conchas, Graciosa island, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Arenal Volcano from the La Fortuna side, Costa Rica
Agri Dagi, Mount Ararat, volcano is the highest mountain in Turkey at 5165m, Anatolia, Turkey, Asia Minor, Asia
View from the San Pedro volcano of San Pedro and Lago Atitlan (Lake Atitlan), Guatemala, Central America
Female tourist on boardwalk by the Morning Glory Pool, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
Arenal Volcano, Arenal, Costa Rica
Black sand beach at Ajuy, Fuerteventura, Canary Islands, Spain, Atlantic, Europe
Crater lake Viti in winter, on Krafla volcano, Krafla geothermal area near Lake Myvatn, north Iceland, Iceland, Polar Regions
Fjadrargljufur Canyon, 100m deep and 2 km long, carved out of palagonite and lava layers by glacial river two million years ago, near Kirkjubaejarklaustur, South Iceland, Iceland, Polar Regions
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
Deep crack in lava field near Lake Myvatn, Mount Hlidarfjall, 771m, in the distance, northern Iceland, Iceland, Polar Regions
Lava fields, Snaefellsnes Peninsula, Iceland, Polar Regions
Mount Gunung Batur volcano, Bali, Indonesia
Mount Etna volcano from Taormina, Mount Etna Region, Sicily, Italy, 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
Volcanic peaks of the Pitons, Soufriere Bay, St. Lucia, Caribbean, West Indies, Central America
Panoramic view of tufa formations, Devrent Valley (Pink Valley), near Zelve, Cappadocia, Anatolia, Turkey, Asia Minor, Asia
Tabacon Hot Springs, Volcanic hot springs fed from the Arenal Volcano, Arenal, Costa Rica
Morning Glory Pool, Upper Geyser Basin, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America
View over Tejeda to Roque Nublo, Gran Canaria, Canary Islands, Spain, Atlantic, Europe
Skye's best known landmark, The Old Man of Storr, the 55m volcanic plug spire in swirling clouds below the Trotternish Ridge in the North East, The Old Man of Storr, Trotternish, Portree, Skye, Inner Hebrides, Scotland, United Kingdom, Europe
Guests from the Lindblad Expedition ship National Geographic Endeavour in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America
Aloe arborescens on edge of cliff, Quinta do Furao, Santana, North coast, Madeira island, Atlantic Ocean, Portugal
Abra Bay, Sao Lourenco peninsula, Madeira island, Atlantic Ocean, Portugal
Aerial drone view of particular ice textures formed in the Svinafellsjokull glacier following global warming, Iceland, Polar Regions
Woman standing on a rock overlooking the Wadi Shab, canyon near Tiwi, Sultanate of Oman, Arabian Peninsula
Landscape around Wakan village, Western Al Hajar Mountains, border South Batinah and Al Dakhiliyah Governorates, Oman, Arabian Peninsula
The spectacular scenery on the island of Madeira, Atlantic Ocean, Portugal
Landscape in the Chalten Massif, Patagonia, Argentina
Mountainscape viewed from the top of Harrat volcanic plateau, AlUla, Medina Province, Saudi Arabia
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
Fireworks display for Volcanoes Festival in Santorini, Cyclades, Greek Islands, Greece
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
Tousside volcano above Trou du Natron, Tibesti Mountains, Chad
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
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
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
Aerial of the Trou du Natron volcanic crater and its natron lakes, Tibesti Mountains, Chad
View of geysers at Geysir Hot Springs in winter, Western Region, Iceland
View of geysers at Geysir Hot Springs in winter, Western Region, Iceland
Continental drift between North American and Eurasian tectonic plates, Thingvellir National Park, UNESCO, in winter, Western Region, Iceland
Continental drift between North American and Eurasian tectonic plates, Thingvellir National Park in winter, UNESCO, Western Region, Iceland
People and continental drift of North American and Eurasian tectonic plates, Thingvellir National Park in winter, UNESCO, Western Region, Iceland
View of snow covered landscape in Thingvellir National Park, UNESCO, in winter, Western Region, Iceland
Continental drift between North American and Eurasian tectonic plates, Thingvellir National Park, UNESCO, in winter, Western Region, Iceland
Budhir Church, Snaefellsness Peninsula, Iceland
A view of the boiling mud at Namafjall, Iceland
A view of the boiling mud at Namafjall, Iceland
Aerial view of people riding camels in volcanic desert, Parque Nacional de Timanfaya, Lanzarote, Canary Islands, Spain, Atlantic, Europe
El Misti and Chachani volcanoes seen from salt flats of Salinas y Aguada Blanca National Reserve, Arequipa Region, Peru, South America
The interior beauty of Jameos del Agua with a ray of light, Haria, Las Palmas, Lanzarote, Canary Islands, Spain, Atlantic, Europe
Quilotoa Lake, Cotopaxi Province, Ecuador
Mount Vesuvius, a volcano located on the Bay of Naples about 9km from the city of Naples, Campania, Italy
Mountain landscape on Kilimanjaro, 5895 metres, UNESCO, highest mountain in Africa and one of the Seven Summits, Tanzania
Mountain landscape on Kilimanjaro, 5895 metres, UNESCO, highest mountain in Africa and one of the Seven Summits, Tanzania
Encounter with dromedaries on the road that crosses the Harrat volcanic plateau, AlUla, Medina Province, Saudi Arabia
Encounter with dromedaries on the road that crosses the Harrat volcanic plateau, AlUla, Medina Province, Saudi Arabia
Woman responsible for ensuring visitor safety and good behavior at the Viewpoint, Harrat volcanic plateau, AlUla, Medina Province, Saudi Arabia
Tousside volcano above Trou du Natron, Tibesti Mountains, Chad
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
Aerial over Trou du Natron with volcano Tousside in the background, Tibesti Mountains, Chad
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
View of geysers at Geysir Hot Springs in winter, Western Region, Iceland
View of geysers at Geysir Hot Springs in winter, Western Region, Iceland
Tabacon Hot Springs, Volcanic hot springs fed from the Arenal Volcano, Arenal, Costa Rica