While scanning underneath the waters of Lake Michigan for shipwrecks, archeologists found something a lot more interesting than they bargained for, as they discovered a boulder with a prehistoric carving of a mastodon, as well as a series of stones arranged in a Stonehenge-like manner.
At a depth of about 40 feet into Lake Michigan's Grand Traverse Bay, using sonar techniques to look for shipwrecks, archeologists discovered sunken boats and cars and even a Civil War-era pier, but among all these they found this prehistoric surprise, which a trained eye can guess by looking at the sonar scans photos in this article.
"When you see it in the water, you're tempted to say this is absolutely real," said Mark Holley, a professor of underwater archaeology at Northwestern Michigan University College who made the discovery, during a news conference with photos of the boulder on display in 2007. "But that's what we need the experts to come in and verify.
Originally posted by Hanslune
Nice but old news, at least five other threads on this dating from 2009
One noted below
In a surprisingly under-reported story from 2007,
Mark Holley, a professor of underwater archaeology at Northwestern Michigan University College, discovered a series of stones – some of them arranged in a circle and one of which seemed to show carvings of a mastodon – 40-feet beneath the surface waters of Lake Michigan.
If verified, the carvings could be as much as 10,000 years old – coincident with the post-Ice Age presence of both humans and mastodons in the upper midwest
Originally posted by St Udio
i'd put the date nearer to 25000 bce, or whenever the meteors hit up in Canada when the ice sheet still existed, the future lake bed was probably a nice semi temperate 'valley' in an ice age environment, hence the vortex site and resulting power center for the primitives to build a shrine there we see as a 'stonehedge'