passage along the Historic Tour route, Mammoth Cave National Park, Kentucky USA

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Size: 3600px × 5400px
Location: Mammoth Cave National Park, Kentucky USA
Photo credit: © Clint Farlinger / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: america, cave, cavern, cavernous, caving, empty, historic, huge, large, largest, long, longest, mammoth, natural, nature, north, passage, passages, passageway, passageways, spelunk, spelunking, tour, underground, vertical