Just south of Mound 64 and the Southern Railroad tracks, Moorehead locates a mound that he numbers 81. He does not refer to it in his publication, his only record of it is on the map. The McAdams Map of 1882 indicates a probable mound in that general location with a height of 10 feet (3.05 meters). There is, however, no way to be sure that this is the same as Moorehead’s Mound 81. It is shown as a roughly oval and about half the size of Mound 64.