Sinkhole
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A sinkhole is a depression or hole in the ground caused by some form of collapse of the surface layer. The term is sometimes used to refer to doline, enclosed depressions that are also known as shakeh
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.
Collapse sinkhole in Chinchón, Spain.
A 32-foot-deep (9.8-meter) collapse formed by rainwater leaking through pavement and carrying soil into a ruptured sewer pipe in the parking lot at Georgia Tech in Atlanta, Georgia in 2005
Red Lake (Croatia)
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Red Lake is a sinkhole containing a karst lake near the city of Imotski, Croatia. It is known for its numerous caves and high cliffs, reaching over 241 metres above normal water level and continuing b
Sinkhole
…of an 80 m (260 ft) conical pit, and approximately 400 m (1,300 ft) deep, it is among the deepest sinkholes in the world (see Sótano del Barro below). Red Lake – Croatia. Approximately 530 m (1,740 ft) deep pit with nearly vertical walls, contains an approximately 280–290 m (920–950 ft) deep lake. Gouffre de…
Clear reflection
From the south