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Landsat image of Lake Toba, on the island of Sumatra, Indonesia (100 km/62 mi long and 30 km/19 mi wide, one of the world's largest calderas). A resur
Landsat image of Lake Toba, on the island of Sumatra, Indonesia (100 km/62 mi long and 30 km/19 mi wide, one of the world's largest calderas). A resurgent dome formed the island of Samosir.
Valle Caldera, New Mexico
Valle Caldera, New Mexico
Satellite photograph of the summit caldera on Fernandina Island in the Galápagos archipelago
Satellite photograph of the summit caldera on Fernandina Island in the Galápagos archipelago
Oblique aerial photo of Nemrut Caldera, Van Lake, Eastern Turkey
Oblique aerial photo of Nemrut Caldera, Van Lake, Eastern Turkey
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The Red Lake sinkhole in Croatia
The Red Lake sinkhole in Croatia
Sinkholes near the Dead Sea, formed when underground salt is dissolved by freshwater intrusion, due to continuing sea-level drop.
Sinkholes near the Dead Sea, formed when underground salt is dissolved by freshwater intrusion, due to continuing sea-level drop.
Collapse sinkhole in Chinchón, Spain.
Collapse sinkhole in Chinchón, Spain.
Collapse formed by rainwater leaking through pavement and carrying soil into a ruptured sewer pipe.
Collapse formed by rainwater leaking through pavement and carrying soil into a ruptured sewer pipe.