How do you fancy this in your back garden then - no picture fakery its actually happened in Guatamala over the weekend!
The story behind it can be seen here
-http://news.nationalgeographic.com/news/2010/06/100601-sinkhole-in-guatemala-2010-world-science/
Its about 60 feet wide and something in the region of 300 feet deep - and it might get bigger if the collapse starts up again.
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