Serpent Mound is a prehistoric earthwork located in Hillsboro, Ohio. It is a large effigy mound that is shaped like a serpent, with its head facing east and its body winding for over 1,300 feet. The mound is made up of soil and rocks that were piled up to create the shape of the serpent. It is believed to have been built by the Adena culture, which existed in the area from around 800 BC to 100 AD.
The serpent's head is a raised oval platform that is about 3 feet high and 60 feet long. The body of the serpent is about 20 feet wide and varies in height from 1 to 3 feet. The tail of the serpent is coiled into three circles, which are about 25 feet in diameter. The entire mound covers an area of about 1.5 acres.
The purpose of Serpent Mound is not entirely clear, but it is believed to have had religious or ceremonial significance for the Adena culture. Some theories suggest that it may have been used for astronomical observations or as a marker for seasonal changes. Others believe that it may have been a place for rituals or offerings.
Today, Serpent Mound is a popular tourist attraction and is recognized as a National Historic Landmark. Visitors can walk along a path that winds around the serpent's body and head, and there are interpretive signs that provide information about the history and significance of the mound. The site also includes a museum and visitor center, which offer exhibits and educational programs about the Adena culture and the mound's construction.
