(Encyclopedia) Wind Cave National Park, 28,295 acres (11,459 hectares), in the Black Hills, SW S.Dak.; est. 1903. Wind Cave, discovered in 1881, was named for the strong air currents that blow…
(Encyclopedia) Wood Buffalo National Park, 17,577 sq mi (45,525 sq km), in NE Alta., Canada, extending into the Northwest Territories; est. 1922 to protect the only remaining herd of wood bison. It…
(Encyclopedia) Castle Mountains National Monument, 20,920 acres (8,466 hectares), SE California. Surrounded on three sides by the Mojave National Preserve (see Mojave Desert), the monument contains…