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The Pipe Creek Sinkhole preserves an ancient wetland. It was created by the collapse of a limestone cave in a Silurian reef formation. That left a steep-sided depression about 75 meters (246 ft) long, 50 meters (164 ft) wide and 11 meters (36 ft) deep. When water collected in the depression, it became the habitat of the plants and animals whose ...
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 ...
B. Bayou Corne sinkhole. Bering Sinkhole. Big Basin Prairie Preserve. Blue Hole (Castalia) Blue Hole (New Mexico) Bottomless Lakes State Park.
Pipe Creek (White River), a stream in Indiana. Pipe Creek (Texas), a stream in Bandera County, Texas. or one of 23 other streams in the United States. A place: Pipe Creek, Texas, an unincorporated community in Bandera County. Pipe Creek Township, Madison County, Indiana, a township. Pipe Creek Township, Miami County, Indiana, a township.
NR-1 Sinkhole – an underwater sinkhole first located by the NR-1 submarine; located southwest of Key West, Florida; Peter Sinks – a natural sinkhole in northern Utah, one of the coldest places in the contiguous United States; Pipe Creek Sinkhole – near Swayzee in Grant County, Indiana, important paleontological site
The Gray Fossil Site is an Early Pliocene assemblage of fossils dating between 4.5 and 4.9 million years old, located near the community of Gray in Washington County, Tennessee. The site was discovered during road construction on Tennessee State Route 75 by the Tennessee Department of Transportation in May 2000, [1] after which local officials ...
The Xiaozhai Tiankeng is 626 meters (2,054 feet) long, 537 meters (1,762 feet) wide, and between 511 and 662 meters (1,677 and 2,172 ft) deep, with vertical walls. Its volume is 119,349,000 m³ and the area of its opening is 274,000 m 2. This material has been dissolved and carried away by the river. The sinkhole is a doubly nested structure ...
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