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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.
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 ...
Suffosion sinkholes are normally associated with karst topography although they may form in other types of rock including chalk, gypsum and basalt. In the karst of the UK's Yorkshire Dales, numerous surface depressions known locally as "shakeholes" are the result of glacial till washing into fissures in the underlying limestone. [citation needed]
It’s not yet clear how the sinkholes contribute to the lake’s ecosystem, chemistry and water levels. In Lake Huron, the groundwater that flows through the sinkholes have high levels of salt ...
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 ...
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.
Canada's Lundin Mining is planning to fill in a giant mystery sinkhole near its copper mine in Chile, an ambitious plan that will also see it attempt to pump out water that has seeped into the ...