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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.
Sinkholes filled with water, also known as blue holes, completely surround the island nation of The Bahamas, and now OceanGate’s co-founder wants to explore the deepest of them all.
Sinkhole: a depression formed as a result of the collapse of rocks lying above a hollow. This is common in karst regions. Kettle: a shallow, sediment-filled body of water formed by melting glacial remnants in terminal moraines. [3] Thermokarst hollow: caused by volume loss of the ground as the result of permafrost thawing. Impact-related:
Bering Sinkhole – natural limestone sinkhole in Texas used for prehistoric burials [4] Big Basin Prairie Preserve – St. Jacob's Well, Kansas, a water-filled sinkhole which lies in the Little Basin, and the Big Basin, a 1.5-kilometre-wide (1 mi) crater-like depression; Blue Hole (Castalia) – a fresh water pond located in Castalia, Erie ...
A sinkhole is an area of ground that has no natural external surface drainage and can form when the ground below the land surface can no longer support the land above, according to the U.S ...
Zacatón is a thermal water-filled sinkhole belonging to the Zacatón system – a group of unusual karst features located in Aldama Municipality near the Sierra de Tamaulipas in the northeastern state of Tamaulipas, Mexico. At a total depth of 339 meters (1,112 ft), it is one of the deepest known water-filled sinkholes in the world. [1]
The contractor expects the hole will be filled with 150 tons of a water-and-gravel mixture, Pratt added. The site is closed to the public, surrounded by two layers of fence, the county said .
The Sacred Cenote at Chichen Itza. The Sacred Cenote (Spanish: cenote sagrado, Latin American Spanish: [ˌsenote saˈɣɾaðo], "sacred well"; alternatively known as the "Well of Sacrifice") is a water-filled sinkhole in limestone at the pre-Columbian Maya archaeological site of Chichen Itza, in the northern Yucatán Peninsula.