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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.
The following is a list of sinkholes, blue holes, dolines, crown holes, cenotes, and pit caves. A sinkhole is a depression or hole in the ground caused by some form of collapse of the surface layer. Some are caused by karst processes—for example, the chemical dissolution of carbonate rocks [1] or suffosion processes. [2]
Sinkholes can range in size from a few feet wide to hundreds of acres, and anywhere from 1 to 100 feet or more deep. Sinkholes can swallow up cars, parts of roads and even houses.
What causes sinkholes? A sinkhole is a hole or deep depression in the ground that opens up when layers of certain types of rock – usually limestone, carbonate rock and salt beds – dissolve ...
Sinkholes can range in diameter and depth. Some have vertical walls, others look like saucers or shallow basins, and some generate ponds by retaining water, according to the U.S. Geological Survey.
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).
A mammoth sinkhole opened along a major New Jersey interstate Thursday morning, closing several lanes and pushing motorists onto local roads to avoid the pit. The sinkhole — which appeared large ...
Sinkholes are not always associated with mining. In 2013, a man was killed when a sinkhole opened up beneath his home in central Florida, where the porous limestone base gives rise to thousands of sinkholes every year. The most damage from sinkholes tends to occur in Florida, Texas, Alabama, Missouri, Kentucky, Tennessee and Pennsylvania.