![]() Wave action of the ancient Great Lakes washed away the surrounding softer rock exposing these picturesque formations. These magnificent arches, stacks and sea caves are composed of limestone which was broken and recemented millions of years ago. Mackinac Island’s many limestone formations are an important part of the history and legends of the Straits of Mackinac. The dead trees then decay and return important elements to the soil, which are used by the next generation of plants. Competition for water and nutrients in this thin soil causes many trees to grow very slowly and die before reaching full size. Photo, Print, Drawing Arch Rock, Mackinac Island, Michigan digital file from intermediary roll film. In some places the limestone bedrock is only inches below the surface. Arch Rock rises 146 feet above the Lake Huron. The soil layer supporting the island’s forest is often very thin. According to Mackinac Island Police Chief Doug Topolski, the man’s body was found at the base of Arch Rock by a passerby at about 9:15 a.m. Sugar maple, beech, red oak, hemlock and white pine dominate a forest containing a wide variety of plants and animals. In the shade of these evergreens grows some of the most beautiful wildflowers of the north woods.Ī mixed hardwood forest grows in the better drained soils of the island’s interior. ARCH ROCK - 102 Photos & 24 Reviews - Mackinac Island, Michigan - Landmarks & Historical Buildings - Phone Number - Yelp Arch Rock 4. Two major forest types cover much of Mackinac Island.Ī fragrant coniferous forest, containing cedar, spruce, balsam fir, and paper birch, grows around the edge of the island and wherever the soils are cool and moist.
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