On the Patrick Map, Mound 8 is indicated as a large, oval mound with a flat top. It is very close to Mound 7, but it seems to be connected by a small platform to Mound 9, thus bearing the same relationship to Mound 9 that Mound 7 bears to Mound 6. The contours on the 1966 UWM Map suggest the same general shapes and relationships between mounds for these pairs of mounds.
Assuming an elevation of 127 meters (416.7 feet) as the base of the mound, Mound 8 is located between N1230-1248 and E172-218, giving a north south dimension of 18 meters (59.1 feet) and an east-west dimension of 46 meters (150.9 feet). The top of the mound presently is at 127.5 meters (418.3 feet), making a total height of 0.5 meters (1.6 feet). Earlier maps show this mound as much higher. For example, the McAdams Map (1882) indicates a height of 8 feet (2.4 meters); the Thomas Map (1894), 5 feet (1.5 meters); and the Peterson-McAdams Map of 1906, 5 feet (1.5 meters). The difference in height from the late nineteenth century to the present is probably due to the extensive cultivation that has taken place on this mound. At present it is in an open field and obviously has been plowed over the years. There appear to have been no excavations in Mound 8. Moorehead refers to it, as he did Mounds 6, 7, and 9, in reference to its relationship to other archaeological features in the site.