Onyx Colonnade in Mammoth Cave, Mammoth Cave National Park, Kentucky [Postcard]

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POSTCARD TITLE: Onyx Colonnade in Mammoth Cave, Mammoth Cave National Park, Kentucky

POSTMARK: Unused

PUBLISHER: National Park Concessions, Inc., Mammoth Cave

TYPE/BACK: Chrome, Divided Back

COMMENTS: Stalactites, stalagmites, and columns are among the varied and interesting features of Mammoth Cave.

The corners of the card are slightly rounded.