Cannonball Concretions Pullout, Geological formation in Theodore Roosevelt National Park, United States
The Cannonball Concretions exhibit perfectly round stone formations embedded within the sedimentary rock layers of the North Dakota badlands.
The mineral deposits gradually accumulated around central cores over millions of years, forming these spherical structures through natural geological processes.
Native American tribes of the region incorporated these stone formations into their traditional stories about the formation of the landscape.
Visitors can access the formations via a designated parking area along the North Unit Scenic Drive, approximately 5 miles into the park.
Each concretion contains distinct patterns of mineral composition, revealing the specific environmental conditions present during their formation.
Location: McKenzie County
GPS coordinates: 47.59648,-103.33253
Latest update: March 4, 2025 14:40
North Dakota features nature preserves, military posts, Native American settlements and geological formations. The state presents aviation museums, archaeological sites and pioneer trading posts. Visitors find natural parks along the Missouri River, Cold War missile sites and metal scrap sculptures.
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