South Manitou Island

South Manitou Island is part of an island chain that extends north to the Straits of Mackinac. The island consists of a ridge of tilted layers of limestone, buried under a blanket of glacial debris. Glaciers carved out the Lake Michigan basin. When the basin filled with water, the peaks of the ridge remained exposed as islands. During post-glacial times, winds blowing on the high, sandy bluffs on the west side of the island moved sand inland, forming perched dunes. The dunes are a fragile environment. Please stay on existing paths and avoid stepping on plants.
Website: South Manitou Island

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