illinois-golfer-swallowed-by-sinkhole-2013

Came across this interesting article..... hole in one!!!

http://www.businessinsider.com/illinois-golfer-swallowed-by-sinkhole-2013-3

the end part video: 'Sinkholes May Be A Sign Of The Apocalypse...Here's How The World May End' .
anything can be linked to end of the world somehow..

Man that must be some experience. And be alive to tell others about it. .....

shocking experience

what causes sinkholes

Natural sinkholes – as opposed to manmade tunnel or cave collapses – occur when acidic rainwater seeps down through surface soil and sediment, eventually reaching a soluble bedrock such as sandstone, chalk, salt or gypsum, or (most commonly) a carbonate rock such as limestone beneath. In a process that can last hundreds, sometimes thousands of years, the water gradually dissolves small parts of the rock, enlarging its natural fissures and joints and creating cavities beneath.

As the process continues, the loose, unconsolidated soil and sand above is gradually washed into these cracks and voids. Depending on how thick and strong that top layer is (sand will not last long; clay can hold out for millennia), and how close to the surface the void beneath is, the land may be able to sustain its own weight – and that of whatever we build on top of it. But as the holes grow, there will come a day when the surface layer will simply give way.

"Once those caves start to collapse, the materials above will simply funnel in," says Dr Anthony Cooper, a principal geologist at the British Geological Survey, which maps the country for rock types susceptible to sinkholes and carries out surveys for developers, builders and individuals worried about the prospects of the land caving in beneath them. "It's just like an eggtimer, really. That's certainly what appears to have happened with this incident in Florida."

singapore possible sinkholes