Located in the small rural community of Peebles, Ohio, the Great Serpent Mound is perhaps the best-known serpent effigy in North America. It’s nearly a quarter mile long, and that makes it the biggest in the United States. The mound, which stands only a few feet high, represents an uncoiling serpent. It was originally believed that the Serpent Mound was created by the Adena culture, who lived in the Ohio Valley from around 800 b.c.e. to around 100 c.e. The Adena people built two burial mounds nearby. However, recent studies indicate that the Serpent Mound is actually much more recent than the Adena timeline, and is now attributed to the…