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On this day in Lewis & Clark history...

The Expedition passes a burning bluff now named Ionia Volcano. The also see a conic hill, today's Spirit Mound, where the Indians say small devils live. The evening camp is near present Vermillion, South Dakota.

From the journals...

Back about 2 miles we are informed that their is a verry high hill called The Hills of the little Devils by the natives & they amagan that it is inhabited by little people with Big heads & they are afraid to go up to them for fear they will shoot them with their Bows & arrows

John Ordway

Missouri River

Missouri River in flood near Ponca