Platte River Campground - Credit: Wikimedia Commons
The Platte River Campground Site, designated 20BZ16, is an archaeological site located along the Platte River, within the Sleeping Bear Dunes National Lakeshore near Empire, Michigan. It is significant as a largely intact record of prehistoric life over a long span of time. It was listed on the National Register of Historic Places in 1990. Read more on Wikipedia
Source: en.wikipedia.org