What about the
Bayou-Corne sinkhole that first collapsed last August? It's made up of a cavern
3400 feet deep, and it may expand to 40 acres in surface area when it is done collapsing. In Portland Oregon, that's a 5 x 5 block grid -- that's a big sinkhole worthy of tracking, no?
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Bayou-Corne Sinkhole at the end of February 2013, via The Advocate |
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Bayou-Corne Sinkhole at the start of August 2012, via The Advocate |
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