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  2. Sinkhole - Wikipedia

    en.wikipedia.org/wiki/Sinkhole

    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.

  3. How dangerous are sinkholes? What to know amid search for ...

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    Sinkholes can swallow up cars, parts of roads and even houses. There's no national database that tracks sinkholes, but the U.S. Geological Survey conservatively estimates that they have cost on ...

  4. Scientists just discovered cold, dark sinkholes in Lake ...

    www.aol.com/scientists-just-discovered-cold-dark...

    The sinkholes range in size from 300 to 600 feet across. The scientists found roughly 40, although Ruberg said there are likely more. A sonar image of a few of the sinkholes found at the bottom of ...

  5. Scientists Are Planning on Plunging Into the World’s ‘Portal ...

    www.aol.com/scientists-planning-plunging-world...

    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.

  6. Blue hole - Wikipedia

    en.wikipedia.org/wiki/Blue_hole

    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).

  7. List of sinkholes - Wikipedia

    en.wikipedia.org/wiki/List_of_sinkholes

    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 ...

  8. A sinkhole may have swallowed a Pennsylvania woman. What are ...

    www.aol.com/know-sinkholes-pennsylvania-woman...

    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 ...

  9. Zacatón - Wikipedia

    en.wikipedia.org/wiki/Zacatón

    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]