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  • Sinkhole - Wikipedia, the free encyclopedia

    http://en.wikipedia.org/wiki/Sinkhole

    A sinkhole, also known as a sink, sink-hole, shakehole, swallet, swallow hole, or
    doline (the different terms for sinkholes are often used interchangeably), is a ...

  • Incredible Sinkholes Around the World Photos - ABC News

    http://abcnews.go.com/International/photos/incredible-sinkholes-world-...

    The car was stuck on the edge of a five meter wide sinkhole.

  • How Sinkholes Work - HowStuffWorks

    http://science.howstuffworks.com/nature/natural-disasters/sinkhole.htm

    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.

  • How Sinkholes Form - St. Johns River Water Management District

    http://www.sjrwmd.com/watersupply/howsinkholesform.html

    Sinkholes are part of the slow, natural process of erosion in Florida's limestone
    terrain that occur over thousands of years. These common geologic phenomena
     ...

  • Sinkholes - Southwest Florida Water Management District

    http://www.swfwmd.state.fl.us/hydrology/sinkholes/

    Sinkholes are depressions or holes in the land surface that occur throughout ...
    More facts about sinkholes can be found in the District's Sinkhole Brochure.

  • Amazing sinkholes | MNN - Mother Nature Network

    http://www.mnn.com/earth-matters/wilderness-resources/photos/13-amazin...

    Some of the most famous sinkholes are seemingly endless pits that swallow trees
    , cars and buildings. Here are some of the world's most fascinating sinkholes.

  • FGS - Sinkholes in Florida

    http://www.dep.state.fl.us/geology/geologictopics/sinkhole.htm

    Nov 10, 2014 ... Sinkholes are a common feature of Florida's landscape. They are only one of
    many kinds of karst landforms, which include caves, disappearing ...

  • (PDF) Florida's Sinkholes - Florida Department of Environmental Protection

    File Format: PDF/Adobe Acrobat

    http://www.dep.state.fl.us/geology/geologictopics/sinkhole/florida_sin...

    (from Bates and Jackson, Dictionary of Geological terms.) Sinkholes are a natural
    component of Flori- da's landscape. In the simplest sense, sink- holes are ...

  • Giant sinkhole swallows up old mine in Russia's Urals (PHOTOS ...

    http://rt.com/news/207371-giant-sinkhole-russia-uralkali/

    Nov 20, 2014 ... A sinkhole 20 by 30 meters (65 by 98 feet) in size has been found near a Uralkali
    mine in Russia's Perm region. While the company says the ...

  • Sinkholes, from USGS Water-Science School

    http://water.usgs.gov/edu/sinkholes.html

    Jul 17, 2014 ... Sinkholes: What are sinkholes and why do they form, from USGS Water Science.