Fort Mandan

frontier fort, North Dakota, United States

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July 17, 2026

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Fort Mandan was a frontier fort constructed by the Lewis and Clark Expedition during their winter encampment of 1804–05. It was located near the villages of the Mandan and Hidatsa tribes in present-day North Dakota. The expedition members built the fort for shelter and to study the local Native American culture and environment. The Mandan people, who traditionally lived in semipermanent earth lodge villages along the Missouri River, were known for their agriculture, hunting, and trading. The fort's construction and the expedition's stay marked an important interaction between American explorers and the indigenous populations of the region.12

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Lewis and Clark Expedition
Expedition from May 14, 1804, to October 16, 1805
Bismarck, North Dakota, and constructed Fort Mandan in which to spend the winter. The captains prepared maps, artifacts, mineral samples, plant specimens, and papers to send back in the spring. On April 7, 1805, a small crew departed on a St. Louis-bound keelboat laden with boxes of materials for Jefferson…
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Bismarck, North Dakota, and constructed Fort Mandan in which to spend the winter. The captains prepared maps, artifacts, mineral samples, plant specimens, and papers to send back in the spring. On April 7, 1805, a small crew departed on a St. Louis-bound keelboat laden with boxes of materials for Jefferson…
Read More