Grand Mere State Park location
Grand Mere is nearly 1,000 acres of beautiful undeveloped wetlands, woods, sand dunes and beach. Protected from Lake Michigan by the dunes to the west, the park has many natural features not found throughout the rest of the state. In 1968 it was designated a National Natural Landmark. A Michigan Recreation Passport is required.
https://www.michigan.org/property/grand-mere-state-park
The above description is courtesy of Pat Fisher, HCH President