2024
April 19, 2024
Managed by Shores & Islands Ohio
Since 2024
In Ohio, US
SIO108
This chronolog combines 13 photos from 13 contributors. Learn more
Largest Glacial Grooves in the world. Cut by flowing water more than 12,000 years ago under a glacier that was a mile thick.
Coordinates: 41.61635, -82.70636
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