Pictured Rocks, Lake Superior shoreline Michigan, Image Credit: Joan Stoker
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Pictured Rocks National Lakeshore is located between Munising and Grand Marais, on the north shore of Michigan's upper peninsula. The sandstone cliff layers represent time periods from Pre-Cambrian to Ordovician, topped by Quaternary glacial drift sediments. Colors along the 15 miles of cliff exposure come from iron, manganese and copper stain.
Image Credit: Joan Stoker