| image = [[File:
Serpent Mound.jpg]]| caption = Serpent Mound is a giant snake effigy. Some archaeologiststhink it was built by the Adena culture (800B.C. - A.D. 100). Othersthink it was built by the Fort Ancient culture (A.D. 1000 - 1650).
==A.D. 1000 to 1650 ==The Fort Ancient culture thrived in southern Ohio and northern Kentucky. Villages were made up of a number of circular or rectangular houses surrounding an open plaza. The Fort Ancient people continued to build small burial mounds, but gradually shifted to burials in a cemetery area with no mounds. There is evidence that the Fort Ancient culture built Serpent Mound in Adams County, Ohio. They also may have built the "Alligator " Mound of Licking County, but that effigy is not likely a sculpture of an alligator. It is more likely an effigy of a panther, opossum, or a salamander.[[Category:Prehistory Groups]] [[Category:Prehistory]][[Category:American Indians]]