The sinkholes lie 450 feet below Lake Michigan's surface, spanning 300 to 600 feet across, prompting numerous inquiries among scientists about their formation.
The sinkholes may be formed similarly to those in Lake Huron by groundwater eroding limestone, creating caverns that collapsed into sinkholes.
Currently, scientists lack sufficient data to determine the exact nature of the Lake Michigan sinkholes, relying on comparisons with Lake Huron's established sinkholes.
Researcher Steve Ruberg emphasizes the importance of assessing deeper sinkholes and groundwater flow to provide clearer insights into the sinkholes' origins.
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