Researchers find a rock with a carving of a Mastodon at the underwater Stonehenge of Lake Michigan
The incredible rock formation and the correctly aligned stones circles clearly indicate a man-made structure. The areas around Michigan are a witness of early human presence in the American continent which is believed to date back over 25.000 years. In the distant past, the Lake itself did not exist since an Ice Age ruled over the lands and what is now located at the bottom of one of the five Great Lakes of North America, was once on dry land.
The man responsible for this underwater discovery is Mark Holley, professor of underwater archeology at the Northwestern Michigan College. In 2007, he searched for shipwrecks but found, 12 meters below the surface a series of stones arranged in a circle. Adding to this amazing discovery is a relatively large rock which has, on its surface a depiction of a mastodon, an animal that became extinct around 8000 BC.