Rock-lined pits in this area pre-date the arrival of the Potawatomi Indians and may have been used for seed or food storage. The rocks are shaped differently than any others in the area, and their origin is uncertain. It is not clear whether the Potawatomi used the pits, but they did build on the site. Artifacts found here included Rosary beads, an 1810 American coin, religious medals dated 1830 with French and Latin inscriptions, glazed European pottery with Roman and Grecian themes, children's school slates and writing tools, clay and stone marbles, a pewter spoon, Indian beads made of turkey quills and bone, a thimble and straight pins, a stylus for writing, surgical scissors, square nails, locks, lead rifle balls, animal bones with charcoal, and numerous other items. A fireplace foundation indicates that there was a building here.