Curtain in Mammoth Cave

Curtain in Mammoth Cave

Because it was carved by underground streams, not by ceiling drips, Mammoth Cave has relatively few formations of the type that people expect. The Frozen Niagara region does have quite a few, as the sandstone cap that otherwise keeps rainwater out is absent. March 2010.
Arthur Digbee
on Mar 19, 2010 7:21 am
Image Type(s): Scenery
Image ID: 605748

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