Look Out Below! 8 Amazing Sinkholes

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The globe is dotted with truly astounding sinkholes. No, not the holes that open on roads, occasionally swallowing cars. We're talking about gaping openings…Read More »

that are several hundred feet across and deep enough to hold skyscrapers.

These true sinkholes were opened by years of erosion as acidic water ate through limestone, dolomite, marble or any other carbonate rock.

Here we take a look at some of the most awe-inspiring of these holes around the world.   Less «
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