Sleeping Bear Dunes is as old as continental ice sheets and as young as the 1970 Establishment Act that set aside the Lakeshore for preservation of the natural resources and for public use. The most prominent features, and those for which the park is named, are the perched dunes above Lake Michigan. These immense sand dunes are ìperchedî atop the already towering headlands that are glacial moraines. The dune overlooks at the Sleeping Bear, Empire and Pyramid Point bluffs are about 400 feet above Lake Michigan. With 65 miles of Lake Michigan shoreline and numerous inland lakes and streams, the park is wonderfully water oriented.