Mound 51

Mound 51, also called Persimmon Mound, was an oval platform mound that has been reconstructed after the original was sold for fill by a former owner. Excavations conducted while the mound was being leveled identified a couple of building stages, some hearths, and other features. Of particular interest was a borrow pit beneath the mound that had been filled rapidly with many well-preserved perishable materials, including thatch, matting, posts from buildings, cordage, plants, and insect remains, possibly debris from feasting that took place nearby in the Grand Plaza. This borrow pit also extended north across Collinsville Road.

Pontoon Beach, Illinois · United States