Sinkholes explained

[Indydealmaker]

This is a really good dissertation on sinkholes.
HowStuffWorks "How Sinkholes Work" (http://science.howstuffworks.com/nature/natural-disasters/sinkhole.htm)

[graciegirl]

This is a really good dissertation on sinkholes.
HowStuffWorks "How Sinkholes Work" (http://science.howstuffworks.com/nature/natural-disasters/sinkhole.htm)


Excellent Steve, and I can safely bet every poster but one will read it.
More later.....and more later.

[Golfingnut]

Good read, but my ipad would not launch the video

[Nlnicholson]

For the ipad

http://m.youtube.com/watch?v=tQvv8YFCGsY

[elizabeth52]

Interesting read. Thank you.