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Kitt Peak National Observatory

(Encyclopedia) Kitt Peak National Observatory, astronomical observatory located southwest of Tucson, Ariz.; it was founded in 1958 under contract with the National Science Foundation and is…

Papahānaumokuākea Marine National Monument

(Encyclopedia) Papahānaumokuākea Marine National Monument, 582,578 sq mi (1,508,870 sq km), in the Pacific Ocean surrounding the NW Hawaiian Islands, c.270 mi (435 km) NW of Oahu; est. 2006 as…

Aztec Ruins National Monument

(Encyclopedia) Aztec Ruins National Monument, 318 acres (129 hectares), NW N.Mex., near Farmington; est. 1923. Ruins of a 12th-century Pueblo town contain interesting kivas, one of which has been…

Tule Lake National Monument

(Encyclopedia) Tule Lake National Monument: see National Parks and Monuments (table)national parks and monuments (table).

Wind Cave National Park

(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…

Waterton Lakes National Park

(Encyclopedia) Waterton Lakes National Park, 203 sq mi (525 sq km), SW Alta., Canada, SW of Lethbridge and at the U.S. border, adjoining Glacier National Park, Mont.; est. 1895. It is the Canadian…