United States North Dakota Grassy Butte

Cannonball Concretions Pullout

A geological site in ND, USA, featuring large, spherical boulders naturally formed in sedimentary rock layers, resembling scattered cannonballs.

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Theodore Roosevelt National Park has some fascinating geological features, but none are more unusual than the cannonball concretions. These are spherical rocks that have formed over time by layers of minerals. The best place to spot them is at the Cannonball Concretions Lookout in the North Unit.

michaelwarford 2 years ago

Cannonball Concretions Pullout Articles

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