With the help of sonar technology, many long-lost shipwrecks and sunken treasures have been detected in the depths of Lake Michigan ... the bottom of the lake has to be a submerged stone structure.
Just last summer, scientists confirmed there are more than 40 sinkholes at the bottom of Lake Michigan, some stretching hundreds of feet across. Scuba divers hover over the remains for the steamer ...
In August, scientists confirmed there are more than 40 sinkholes at the bottom of Lake Michigan in the Wisconsin Shipwreck Coast National Marine Sanctuary. The sinkholes in Lake Michigan ...