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Natural Bridges National Monument

(Encyclopedia) Natural Bridges National Monument, 7,636 acres (3,093 hectares), SE Utah; est. 1908. Located in an area of colored cliffs and box canyons, the monument contains three huge natural sandstone bridges: O...

Yukon-Charley Rivers National Preserve

(Encyclopedia) Yukon-Charley Rivers National Preserve, 2,526,512 acres (1,022,879 hectares), E central Alaska. The preserve, which protects the two river basins, near the Canadian border, contains paleontological an...

Fort Clatsop National Memorial

(Encyclopedia) Fort Clatsop National Memorial, now part of Lewis and Clark National Historical Park. See 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...

Guadalupe Mountains National Park

(Encyclopedia) Guadalupe Mountains National Park gwäˈdəlo͞op [key], 86,416 acres (34,998 hectares), W Tex. Located in the Guadalupe Mts., the park contains parts of the world's largest and most significant Permi...

Shenandoah National Park

(Encyclopedia) Shenandoah National Park, 198,081 acres (80,195 hectares), N Va., extending 80 mi (129 km) along the crest of the Blue Ridge. Authorized in 1926, it was fully established as a national park in 1935. S...

Hot Springs National Park

(Encyclopedia) Hot Springs National Park, 5,549 acres (2,247 hectares), W central Ark.; est. 1921; nearly surrounded by the city of Hot Springs. Visited by Spanish explorer Hernando De Soto in 1541, the springs, lon...

Montezuma Castle National Monument

(Encyclopedia) Montezuma Castle National Monument, 858 acres (347 hectares), central Ariz.; est. 1906. Montezuma Castle, built c.1250, is a 5-story, 20-room dwelling perched high in the cavity of a cliff. It was nam...
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