Quote:
Originally Posted by The Badger
Ok ..... In laymans terms ..... WTF are sink holes ? I mean I understand what they are but not how they come to be .
Is it old mining tunnels collapsing or what ?
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Underwater correction of the earth.
When raining, the water runs down, and under the building, removing the earth foundation which a building (or more often road) is build upon. At some point there is so little earth left, that the foundation collapses.
http://en.wikipedia.org/wiki/Sinkhole