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  • Sinkhole - Wikipedia

    https://en.wikipedia.org/wiki/Sinkhole - 17 hours ago

    A sinkhole, also known as a cenote, sink, sink-hole, shakehole, swallet, swallow
    hole, or doline is a depression or hole in the ground caused by some form of ...

  • Sinkholes, from USGS Water-Science School


    Sinkholes are common where the rock below the land surface is limestone,
    carbonate rock, salt beds, or rocks that can naturally be dissolved by
    groundwater ...

  • World's BIGGEST (and sometimes WEIRDEST) HOLES! (Including ...


    May 19, 2015 ... World's BIGGEST (and sometimes WEIRDEST) HOLES on Earth! (Including the
    biggest sinkhole on earth; the largest open pit mine in the world ...

  • Giant sinkholes - Giant sinkholes - Pictures - CBS News


    The sudden nightmare of sinkholes swallows cars and homes and can cause the
    loss of life. The phenomena occurs due to erosion beneath the surface, ...

  • Sinkholes News, Photos and Videos - ABC News


    Scores of residents in Polk County, Florida have requested water quality testing
    after a fertilizer plant admitted a sinkhole on its property leached 215 million ...

  • Incredible Sinkholes Around the World Photos - ABC News

    http://abcnews.go.com/International/photos/incredible-si... - 9 hours ago

    Slideshow of incredible sinkholes around the world.

  • How Sinkholes Work | HowStuffWorks


    Sinkholes are much more than holes in the ground. Learn how sinkholes can
    cause the Earth to swallow up you, your home and your car.

  • Sinkholes - Southwest Florida Water Management District


    Sinkholes are depressions or holes in the land surface that occur throughout
    west-central Florida. They can be shallow or deep, small or large, but all are a ...

  • Sinkholes: When the Earth Opens Up - The Atlantic


    Jul 12, 2013 ... Sinkholes can be anywhere from a few feet wide and deep, to two thousand feet
    in diameter and depth. An undiscovered cavern or deep mine ...

  • Sinkhole Opens in Australian Backyard - Video - NYTimes.com


    Aug 2, 2016 ... Mayor Paul Pisasale of Ipswich said an old mine shaft is the suspected cause of
    a sinkhole that swallowed part of a backyard on Tuesday, and ...