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13 amazing sinkholes

By: Laura Moss on Oct. 6, 2010, 11:22 a.m.
sinkhole in Picher, Oklahoma

Photo: Charlie Riedel/AP

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Picher, Oklahoma sinkhole

The EPA calls Picher, Okla., the “most toxic place in America,” and today the city is a modern a ghost town. Years of mining for lead and zinc has left the town full of sinkholes like this one. The roofs of some of the mines — unable to support the weight of the earth — collapsed, and now the former municipality is home to only giant chat piles and numerous massive sinkholes.