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Theodore Roosevelt National Park

(Encyclopedia)Theodore Roosevelt National Park, 70,447 acres (28,531 hectares), W N.Dak., in the Badlands and on the Little Missouri River; est. 1947. There are three units—the North Unit, the Elkhorn Ranch Unit,...

Bluestone National Scenic River

(Encyclopedia)Bluestone National Scenic River: see National Parks and Monuments (table)national parks and monuments (table). ...

Wood Buffalo National Park

(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 lies between Lake...

Wright Brothers National Memorial

(Encyclopedia)Wright Brothers National Memorial: see National Parks and Monuments (table)national parks and monuments (table). ...

Big Bend National Park

(Encyclopedia)Big Bend National Park, 801,163 acres (324,471 hectares), W Tex.; authorized 1935, est. 1944. It is a triangle formed where the Rio Grande runs southeast then northeast in a big bend along the U.S.-Me...

Big Cypress National Preserve

(Encyclopedia)Big Cypress National Preserve: see National Parks and Monuments (table)national parks and monuments (table). ...

Big Hole National Battlefield

(Encyclopedia)Big Hole National Battlefield: see National Parks and Monuments (table)national parks and monuments (table). ...

Big Thicket National Preserve

(Encyclopedia)Big Thicket National Preserve: see National Parks and Monuments (table)national parks and monuments (table). ...

Yucca House National Monument

(Encyclopedia)Yucca House National Monument: see National Parks and Monuments (table)national parks and monuments (table). ...

Rainbow Bridge National Monument

(Encyclopedia)Rainbow Bridge National Monument, 160 acres (65 hectares), S Utah; est. 1910. Rainbow Bridge, the largest natural bridge in the world, is a symmetrical, pink, sandstone arch, 309 ft (94 m) high, 33 ft...