In 2022, sonar images revealed mysterious circles at the bottom of Lake Michigan. Recent surveys have confirmed these are craters, ranging from 6 to 12 metres deep, with some spanning up to 300 metres in diameter. The craters were first discovered near the Wisconsin Shipwreck Coast National Marine Sanctuary. While some researchers suggest they may be sinkholes, others…
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Lake Michigan Has 40 Giant Craters at Its Bottom, Scientists Confirm
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