Interesting Things with JC #1194: "Stonehenge of Lake Michigan" - 40 feet beneath Lake Michigan, a mysterious stone alignment could be over 10,000 years old. Hunters, mastodons, or ritual site? The lake keeps its secrets.

Ref - Holley, M. (n.d.). The truth about the "Stonehenge" in Lake Michigan. Retrieved from https://holleyarchaeology.com/index.php/the-truth-about-the-stonehenge-in-lake-michigan/