Archaeological excavations have uncovered multiple dwelling structures, stockade walls, hearths, storage pits, middens, and thousands of artifacts. Many material cultural items have long since decomposed, but fragments remain. Circular stains in the concrete of the mock archaeological excavation represent decomposed posts, the remains of tree saplings that once made up the walls of a dwelling structure. Over time, the posts rot away and all that remains are stains in the soil. A partially decomposing structure has been recreated extending into the mock excavation to show how a structure decomposes over time and what is left behind after hundreds of years.