← Scenic Saturday: Mammoth Cave, where surface water and groundwater meet

Frozen Niagara

By | Published December 17, 2011 | Full size is 1704 × 2272 pixels

Frozen Niagara dripstone, Mammoth Cave, Kentucky (photo by A. Jefferson, March 2011)

Frozen Niagara dripstone, Mammoth Cave, Kentucky (photo by A. Jefferson, March 2011)

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