where is serpent mound located
Serpent Mound Mysteries. Serpent Mound is the largest serpent effigy known to man. It is a 1/4 mile long mound shaped like a snake and located in Adams County, Ohio. Various alignments of the serpent correspond to astronomical features, such as alignments of the sun and moon. Recent research has found solar alignments and six lunar alignments corresponding to six coils of the serpent effigy.