That one time in Michigan: When an ancient, Stonehenge-like structure was discovered in Lake Michigan
Journey beneath the waves of Lake Michigan to learn about a centuries-old secret—from Stonehenge to the Great Lakes.
If you’ve ever visited Stonehenge, it’s no surprise that the prehistoric structure is among the most famous and fascinating destinations on earth. While some of its history remains uncertain, archaeologists and scholars believe construction of Stonehenge began in 3100 BC, with several building phases to follow over the next 1,500 years. Its purpose as a burial site adds further eerie appeal for tourists itching to see the circular arrangement of stones for themselves.
While it’s hard to rival the magnificence and mystery of Stonehenge, we Michiganders are lucky to have our very own “Stonehenge” right here in the Great Lakes State. It might not be celebrated with quite as much pomp and circumstance, but it’s magnificent nonetheless—and we think it’s one of Michigan’s most astonishing hidden treasures.
An unexpected discovery
Our Great Lakes are such a point of pride, offering endless opportunities for outdoor adventure, shoreline relaxation, and tons of sunshine. Many Michiganders proudly boast about the “shark-free” waters of our lakes, which offer a sense of security that only fresh water can.
But that’s not to say there’s nothing mysterious lurking below the surface in Michigan. In fact, one of North America’s most fascinating moments of archaeological discovery happened below the waves of our beloved Big Lake.
Northwestern Michigan College professor of underwater archaeology Mark Holley made the discovery in 2007 while on the lookout for shipwrecks in the depths of Lake Michigan. Holley’s first inkling of a broader underwater structure was a prehistoric rock carving some 40 feet below the surface of the lake.
Deeper investigation revealed a plethora of granite structures, some arranged in rings—not dissimilar to Stonehenge. Holley discovered a straight line of underwater stones stretching for more than a mile on the lakebed.
History hidden underwater
While the stones at Michigan’s “Stonehenge” are far smaller than those in England, they’re no less fascinating, particularly given their history. Archaeologists estimate the granite rings are among the oldest manmade structures ever found in North America, dating back at least 9,000 years.
It’s nearly impossible to visualize such a massive stretch of time or to imagine all the bits of world history these stones “lived” through. Of course, at the time of its construction, Michigan’s “Stonehenge” would have been on dry land on the lakeshore, which offers insight into the changing landscape of the Great Lakes over the centuries.
Holley remains protective of his discovery, withholding information about the formation’s exact whereabouts until he can arrange funds and proper protocol for a professional excavation.
And while Lake Michigan’s “Stonehenge” is one-of-a-kind, it’s not the only awe-inspiring ancient rock formation in the state. Lake Huron is home to a sprawling underwater land bridge called the Alpena-Amberley Ridge, which includes what appears to be a caribou hunting structure that also dates back some 9,000 years.
So when we say, “Michigan rocks!” we really mean it.
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