Empire Bluff Trail, Sleeping Bear Dunes National Lakeshore, June 2022 What happens when a combination of glacial recession, wind, and erosion produces a perched dune atop a glacial moraine atop geological debris from the most recent Ice Age? The result, in Michigan’s Sleeping Bear Dunes National Lakeshore, is the Empire Bluffs, a 400-foot headland overlooking …
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