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Discovering Mystery Valley – Field Trip Friday

Swimming in the Mystery Valley lake.


Posen — Elijah Baker and Larissa Liska, led by Tommy Dowd, discovered Mystery Valley near Posen. This preserve has one of the largest karst collapse valleys in the Great Lakes Region. There are two self-guided trailer, earth-crack and valley. At the end of one trail there is a lake that rises, falls and sometimes disappears.