Rock formation inside Mammoth Cave National Park, Kentucky.
Schlüsselwörter
arch,
national park,
park,
outdoors,
nature,
hiking,
exploring,
sandstone,
stone,
sand,
leaf,
fall,
brown,
green,
environment,
landscape,
forest,
tree,
creek,
stream,
water,
geology,
formation,
rock,
rocky,
hole,
tunnel,
kentucky
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