Serpent Mound Mysteries
Serpent Mound was built by one of the cultures known as the "mound builders." These peoples built mounds in a large area from the Great Lakes to the Gulf of Mexico and from the Mississippi River to the Appalachian mountains.   Mounds vary in age; some dating back as far as the early part of the 6th century, while others (especially those in the southeastern area) were built in historic times. Stone, copper, mica, obsidian, and meteoric iron were widely used by the prehistoric mound builders. Obsidian coming from the Rocky mountains, mica from the S Appalachian mountains, and copper from Wisconsin indicate widespread trade. The people practiced weaving and pottery making.    (Paraphrased from, 2004)