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 is a Great Plains state with a history shaped by trading posts, military forts, and Native American settlements. The region stretches from the Missouri River to the Canadian border, preserving sites that tell stories from the 19th century alongside Cold War relics and natural areas. Visitors find military installations turned into museums, archaeological sites, and parks that protect bison, prairie, and forest.The locations include Theodore Roosevelt National Park with its badlands formations, Fort Union Trading Post from the fur trade era, and Knife River Indian Villages National Historic Site, where earth lodge foundations recall earlier communities. The Enchanted Highway displays large metal sculptures along the road, while Nekoma Missile Site and Ronald Reagan Minuteman Missile Site provide views into the missile defense systems of the 1970s. State parks like Fort Ransom and Icelandic preserve river valleys and woodlands. Museums in Fargo and Minot showcase aviation history. The Center of North America Monument in Rugby marks a geographic midpoint, and Bonanzaville USA displays historical buildings from pioneer times.
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