Just south of this point, Fort Mann was established as a repair depot for wagons in April 1847, during the Mexican War by teamster Daniel Mann. While called a fort, it was more of a supply depot that was later used by the US Army. Reconstructed in 1848 the post was abandoned when nearby Camp Mackay (later renamed Fort Atkinson) was established in 1850.
More information about Forts Mann and Atkinson is available at the Caches Monument (Stop # 33).