Group thinks it has found proof of 10,000-year-old, Ice Age culture in Straits of Mackinac

A team of nonscientists may have inadvertently confirmed the most important finding in Great Lakes archaeology in at least a decade.

The group, made up mostly of Native American tribal citizens, utilized a remote-operated underwater vehicle in the Straits of Mackinac to take a look at Enbridge's Line 5 oil and natural gas pipelines on the lake bottom. But among the things they found were stones they say appear arranged in circular and linear patterns on the lake floor.

If that was done by the hands of humans, it occurred when the Straits area was last above water — near the end of the last Ice Age, about 10,000 years ago.

https://www.freep.com/story/news/local/michigan/2020/10/14/straits-mackinac-ice-age-culture-native-american-tribes/5978992002/