Great Serpent Mound Ohio
This man-made earthwork in the shape of a long, uncoiling serpent a quarter of a mile long was created between 1000 and 1500 CE for unknown purposes. It is now protected in a state park in Ohio.
This man-made earthwork in the shape of a long, uncoiling serpent a quarter of a mile long was created between 1000 and 1500 CE for unknown purposes. It is now protected in a state park in Ohio.