GREENLEAF TOWNSHIP, Mich. The Sanilac Petroglyphs have drawn generations of visitors to a wooded area in rural Michigan, but the rare American Indian carvings are in danger of being lost forever ...
CC0 Usage Conditions ApplyClick for more information. Why is there a Native American canoe carved in an abandoned quarry inhabited by U.S. soldiers during WWI? The answer leads back to Point Pleasant, ...
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