Dr. Richard Shiels, director of the Newark Earthworks Center, has written an excellent article in the Newark Advocate about how the Newark Octagon has been saved from destruction. For the full text visit the Newark Advocate.
"Today, only two of the original geometric enclosures remain. The Octagon is in Newark. The Great Circle is in Heath. No other community acted to save their earthworks as ours did. An enclosure called Mound City stands in Chillicothe, but it actually was destroyed by the federal government in World War I and rebuilt in the 1920s."