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Carlsbad Caverns National Park

(Encyclopedia)Carlsbad Caverns National Park, 46,766 acres (18,940 hectares), SE N.Mex., in the Guadalupe Mts.; designated a national park in 1930. These connecting limestone caves, with remarkable stalactite and s...

Adams National Historical Park

(Encyclopedia)Adams National Historical Park: see National Parks and Monuments (table)national parks and monuments (table). ...

Tallgrass Prairie National Preserve

(Encyclopedia)Tallgrass Prairie National Preserve: see National Parks and Monuments (table)national parks and monuments (table). ...

Bears Ears National Monument

(Encyclopedia)Bears Ears National Monument, 201,876 acres (81,696 hectares), SE Utah; est. 2016. Named for prominent twin buttes, the national monument as proclaimed by President Obama was more than six times large...

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 alternately in and out...

Valles Caldera National Preserve

(Encyclopedia)Valles Caldera National Preserve väˈyās [key], 89,766 acres (36,343 hectares), N N.Mex.; est. 2000 by Valles Caldera Trust, transferred to National Park Service 2015. Formerly part of the vast, pri...

Vermilion Cliffs National Monument

(Encyclopedia)Vermilion Cliffs National Monument: see National Parks and Monuments (table)national parks and monuments (table). ...

Waco Mammoth National Monument

(Encyclopedia)Waco Mammoth National Monument: see National Parks and Monuments (table)national parks and monuments (table). ...

Walnut Canyon National Monument

(Encyclopedia)Walnut Canyon National Monument: see National Parks and Monuments (table)national parks and monuments (table). ...

United States National Museum

(Encyclopedia)United States National Museum: see Smithsonian Institution. ...