The finding of an intact crescent appears to be unique. Since crescents almost always represent the moon in world ethnology, this becomes the first alternative in seeking an explanation of the petroform morphology. Many indigenous populations in the Midwest have lunar mythology, and the Ojibwa have graphically represented the moon in birchbark scrolls used as mnemonic devices in the Midewiwin, or 'Grand Medicine Society'. In prehistoric culture of Wisconsin the moon is represented in copper crescents commonly found in complex Old Copper burials dating to the Late Archaic ca 3-3,500 B.P. (Steinbring 1975: 268-289). Future research at Griffiths will include the use of a gridded metal detector scan. There is, however, no known solid evidential precedent for such antiquity for petroforms.