• Milky Way across Theodore Roosevelt National Park

    Theodore Roosevelt

    National Park North Dakota

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  • Road Construction

    Visitors to the South Unit may experience up to 30 minute delays and rough road conditions due to road construction along East River Road. Construction is expected to be complete by October 1. Check back for updates Updated 08/13/2014 5:16 pm MT

Park Acreage by Unit

Total Acreage by Unit
South Unit 46,158.57
North Unit 24,070.32
Elkhorn Ranch Unit 218
Total Acreage 70,446.89

Acreage by Type
Federal Acreage 69,702.12
Non-federal Acreage 774.77

Wilderness Area Acreage
North Unit 19,410
South Unit 10,510
Total 29,920

Did You Know?

Cannonball concretions

Cannonball concretions can be found along the North Unit Scenic Drive. They were formed by the selective precipitation of mineral-rich groundwater and are nearly spherical because the sandstone in which sand grains were cemented together was of uniform permeability. More...