Mackinac Town Crier

A Look at History

  Island Minerals Mackinac breccia is ground into the history of our Island. This unusual rock formation tends to flake, rather than crumble, under the pressure of ice and snow. When the glaciers came to the region that is now the Straits of Mackinac, a small mountain of breccia partly resisted the grinding force of the ice. Mackinac Island was […]


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