Photo Great Serpent Mound Aerial view of Great Serpent Mound

The Great Serpent Mound is located in Ohio, east of Cincinnati and the area around the mound is believed to have been inhabited over 3000 years ago. The date the mound was built is uncertain. The mound is the shape of an uncoiling snake, is more than 1,300 feet long, and is the largest earthwork effigy in the world.

Drawing of the Great Serpent Mound in Ohio