Tag Archives: Niobrara chalk

Calumet Bluff Trail (Gavin’s Point Dam area, NE)

During the first summer of the famed Lewis & Clark Expedition in 1804, the travelling company camped for four nights at the base of a high bluff along the Missouri River, described by the party as ‚Äúcomposed of a yellowish … Continue reading

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Gavin’s Point Nature Trail (Lewis & Clark Recreation Area, SD)

Created by the Gavins Point Dam on the Missouri River, Lewis and Clark Lake spans more than 31,000 on the border of Nebraska and South Dakota. While the massive reservoir conceals the original river embankments, it is paralleled on both … Continue reading

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Spirit Mound Trail (Spirit Mound Historic Prairie, SD)

With a system of dams effectively flooding much of the Missouri River shoreline where Meriweather Lewis and William Clark once camped during their 1803-6 expedition, there are few places left where one can walk, with certainty, in the footsteps of … Continue reading

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