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  • Sinkhole - Wikipedia, the free encyclopedia

    https://en.wikipedia.org/wiki/Sinkhole - 16 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

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

    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 ...

  • 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.

  • Sink Holes | Weather Wiz Kids

    http://www.weatherwizkids.com/?page_id=1331

    What are sinkholes? Sinkholes are pits in the ground that form in areas where
    water gathers without external drainage. Sinkholes mainly occur as water drains
     ...

  • Sinkholes News, Photos and Videos - ABC News

    http://abcnews.go.com/topics/news/disasters/sinkholes.htm

    Browse Sinkholes latest news and updates, watch videos and view all photos
    and more. Join the discussion and find more about Sinkholes at abcnews.com.

  • Incredible Sinkholes Around the World Photos - ABC News

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

    Mar 29, 2016 ... Slideshow of incredible sinkholes around the world.

  • NOVA - Official Website | Sinkholes—Buried Alive - PBS

    http://www.pbs.org/wgbh/nova/earth/sinkholes.html

    Bush was a victim of a sinkhole—a worldwide hazard that lurks wherever
    limestone and other water-soluble rocks underpin the soil. When carbon dioxide
    from ...

  • Giant sinkhole opens up in Florida - BBC News - BBC.com

    http://www.bbc.com/news/world-us-canada-35932124

    Mar 31, 2016 ... Residents have been forced to leave their homes on a mobile home Park in
    Tarpon Springs, Florida, after a large sinkhole appeared nearby.

  • Sinkholes - Missouri Geological Survey - MO.gov

    http://dnr.mo.gov/geology/geosrv/envgeo/sinkholes.htm

    We provide assistance to the citizens of Missouri by evaluating the causes and
    impacts of sinkhole formation and collapse. Geologists perform geologic and ...

  • Giant sinkhole swallows busy intersection - CNN Video - CNN.com

    http://www.cnn.com/videos/world/2016/04/24/china-sinkhole-opens-on-hig...

    Apr 24, 2016 ... Traffic cameras caught the moment a giant sinkhole opened in the middle of a
    busy intersection in Hangzhou, China.