Enduring.

About 390 years ago, pilgrims momentously set foot on the Eastern seaboard of the U.S. and Plymouth Rock was christened an enduring symbol of American settlement.

But 395 years ago, French explorers were plying the Straits of Mackinac and using a rock at least five times the size of Plymouth’s to gauge water levels as they navigated in canoes along the tumultuous waters between Michigan’s Upper and Lower Peninsulas.

The McGulpin Rock in Emmet County has been observed since at least 1615 as an aid to navigation for French explorers around the time voyager Etienne Brule was traveling the Great Lakes. Native Americans used it much earlier.
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