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.

The Mandan, Hidatsa and Arikara Nation has established Three Affiliated Tribes National Park after buying 2,100 acres of a ...

the area was designated a national monument in 1906 and a national park more than a half century later. If you are traveling west on I-40, exit into park. When leaving the south end of park ...

America’s first national park, Yellowstone, was established in 1872. Forty-four years later, the National Park Service was ...