A sinkhole, also known as a cenote, sink, sink-hole, shakehole, swallet, swallow
hole, or doline is a depression or hole in the ground ...
www.ask.com/youtube?q=How Are Sinkholes Formed?&v=tQvv8YFCGsY
Mar 2, 2013 ... Sinkholes are eating up buildings! You've seen 'em on the news, maybe even in
your own neighborhoods... but what exactly causes them in ...
www.ask.com/youtube?q=How Are Sinkholes Formed?&v=ZqKuSKCO6o8
Jul 30, 2012 ... Massive Sinkhole Documentary - World's Most Terrifying Sinkhole - Documentary
HD - Duration: 53:11. ... CAVE AND SINKHOLE FORMATION!
As the limestone dissolves, pores and cracks are enlarged and carry even more
acidic water. Sinkholes are formed when the land surface above collapses or ...
Humans are also responsible for the formation of sinkholes. Activities like drilling,
mining, construction, broken water or drain pipes, improperly compacted soil ...
Aug 13, 2013 ... Get the science behind sinkholes and which areas are more prone to them. ...
Sometimes in karst areas [irregular landscapes formed when ...
Jan 9, 2016 ... The most impressive sinkholes form in thick layers of homogenous limestone.
Their formation is facilitated by high groundwater flow, often ...
Natural sinkholes occur due to erosion or underground water. They start
developing ... Humans are also responsible for the formation of sinkholes.
Activities like ...
Jun 1, 2010 ... Like all sinkholes, the one in Guatamala City formed when a swath of land
collapsed, leaving behind a crater-like depression in the ground.
Mar 15, 2014 ... Located in Green County, east of Bowling Green, Ky., this sinkhole formed about
eight years ago; the owners of the farmland where it formed ...