Carlsbad Caverns National Park, New Mexico
Designated a World Heritage Site in 1995
Beneath this rugged land of rocky slopes and canyons, cactus, grass, thorny shrubs and the occasional tree in 
Carlsbad Caverns National Park are more than 118 known caves – all formed when sulfuric acid dissolved the surrounding limestone. Carlsbad Cavern is one cave in a fossil reef laid down by an inland sea 250 to 280 million years ago.

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