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The geological wonders of Mackinac, like Arch Rock, have awed visitors for hundreds of years. Learn about how they were formed as the Milliken Nature Center opens for the 2025 season!
The Milliken Nature Center accents the natural beauty of Arch Rock. The exhibit inside, Arch Rock: Unsurpassed in Nature’s Beauty, celebrates what was known as the “Jewel of the Mackinac National Park” and is still today known as a “Star Attraction of Mackinac Island State Park.” It features dozens of stunning historic images of Arch Rock as well as a timeline on how the arch was formed. In addition, the center highlights geology on Mackinac Island as a whole, from the formation of the island itself and how stunning features such as Sugarloaf Rock and Skull Cave came to be. A highlight of the center is an interactive 3D map of the island. #thisismackinac
