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Caldeira Negra is one of the deepest lagoons from Flores Island, Azores.
Drone shot of volcano in El Salvador
Old volcano on the island of Rapa Nui (Easter Island)
View into the lava lake inside the crater of Nyiragongo volcano – this is the largest lava lake on earth. \n\nThe 3470 m high volcano Nyiragongo belongs to the group of Virunga volcanoes in the border triangle of DR Congo, Uganda and Rwanda and is one of the most dangerous volcanoes on earth. The nearby city of Goma (the capital of the Congolese province of North Kivu) is constantly threatened by the nearby volcano.
The crater lake of Santa Ana Volcano or Ilamatepec in El Salvador, Central America
View to the Rano Kau Volcano Crater Lake under blue summer sky. Rano Kau is a extinct volcano that forms the southwestern headland of Easter Island, Isla de Pascua, Polynesia, Chile.
Scenic view of the Coral Beach in Scotland
Looking down into Arizona's Meteor Crater along the southern rim.
Natural sink hole in limestone in the American southwest used by the ancient Sinagua with cliff dwellings in the side of the cliff surrounding the water
Drone shot of volcano in El Salvador
Landslide dam lake
Hiking in laurel forest of Anaga, UNESCO biosphere reserve in Tenerife
nature
Caucasus Mountains in Kazbegi, Georgia
Panoramic view over the central mountains of island Gran Canaria, Canary Islands, Spain with village San Bartolome de Tirajana on sunny day in winter with low clouds viewed from Pico de las Nieves.
Beautiful Panoramic landscape view near the border with Turkmenistan, Golestan province, Iran
Thermal Mineral Spring Hierve el Agua, natural rock formations in Oaxaca, Mexico.
The Haleakala High Altitude Observatory (Science City) at the summit of the Haleakala Crater (10020 ft) in Maui, Hawaii.
High aspect aerial panoramic view of Volcan Calderon Hondo volcano and crater near Lajares Corralejo in Fuerteventura Canary Islands Spain
View from above on Arnarvatn lake at Reykjanes peninsula on Iceland.
Over 50,000 years ago, a gigantic meteorite weighing several hundred thousand tons impacted the earth near Flagstaff, Arizona.  The force of the impact was a hundred times greater than an atomic bomb, resulting in the huge crater pictured here.
Quilotoa volcano lake is 3ooo m wide, about 250 deep and on the Elevation 3,914 m. The greenish color coms from dissolved minerals and it is touristic destination with hiking down to the lake.
Landslides inside Aso volcanic caldera after 2016 Kumamoto earthquakes - Aso-Kuju National Park, Japan
Haleakala Observatory on the island of Maui, also known as the Haleakala High Altitude Observatory Site, is the location of Hawaii's first astronomical research observatory. It is owned by the Institute for Astronomy of the University of Hawai'i, which operates some of the facilities on the site and leases portions to other organizations. At over 3,050 meters (10,010 ft) in altitude, the summit of Haleakala is above one third of the Earth's atmosphere and has excellent astronomical seeing conditions. Science City\
Drone shot of volcano in El Salvador
Astronomical observatory buildings in hawaii
Looking down into Arizona's Meteor Crater along the southern rim.
Erosion formations between Zelve and Paşabağ - Zelve Open Air Museum, Fairy Chimneys, Cappadocia
Maui, HI, USA - August 24, 2019: The Haleakala Observatories signage post
Madeira mountain range with white clouds behind it.
Free Images: "bestof:FAI HOR Capelo CabeçoVerdeCrater.JPG en The Cabeço Verde crater aligned to the craters leading to the summit of the Caldera on Faial Island Azores Photo taken"
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Crateras vulcânica do Monte da Guia, Caldeirinhas, dia de tempestade, Concelho da Horta, ilha do Faial, Açores, Portugal.JPG
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