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Dragon Hole – the deepest underwater sinkhole , located in the Drummond Island reef of the Paracel Islands (also known as the Xisha Islands) in the South China Sea. [a] Xiaozhai Tiankeng – the deepest sinkhole in the world (over 650 meters), located in Fenjie County of Chongqing Municipality.
The Great Blue Hole, located near Ambergris Caye, Belize Dean's Blue Hole, Long Island, Bahamas Watling's Blue Hole, San Salvador Island, Bahamas. A blue hole is a large marine cavern or sinkhole, which is open to the surface and has developed in a bank or island composed of a carbonate bedrock (limestone or coral reef).
The Great Blue Hole is a large marine sinkhole off the coast of Belize. It lies near the center of Lighthouse Reef, a small atoll 70 km (43 mi) from the mainland and Belize City. The hole is circular in shape, 318 m (1,043 ft) across and 124 m (407 ft) deep. [1] [2] It has a surface area of 70,650 square metres (760,500 sq ft).
Blue holes are some of the most mysterious geological phenomena on Earth. Beginning as underwater caves formed during the past Ice Age, they formed sinkholes as the ice caps receded and water ...
Guillermo Söhnlein’s Blue Marble Exploration is planning a descent to explore Dean’s Blue Hole
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The Red Lake sinkhole in Croatia. 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 shakeholes, and to openings where surface water enters into underground passages known as ponor, swallow hole or swallet.
Prepare for your jaw to drop. Guillaume Nery, a fearless BASE jumper, decided to take on a massive underwater sinkhole, also known as a blue hole, in the Bahamas, and created an incredible film ...