Giant fossilized logs, many of them fractured into cord-wood-size segments ... the area was designated a national monument in 1906 and a national park more than a half century later.

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Federal officials are reportedly considering shrinking at least six national monuments in the Mountain West region to ...

Under a swath of Kentucky hills and hollows is a limestone labyrinth that became the heartland of a national park. The surface of Mammoth Cave National Park encompasses about 80 square miles.

A groundbreaking discovery has been made in the Vromoner region of southern Albania, where researchers have confirmed the ...