Geology of Midewin
This event occurred in the past.

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Attendees go back 15,000 years when a one-mile thick glacial ice sheet moved over Illinois. View the rocks, hills, and plains of Midewin that still bear evidence of these vastly different environments. This tour takes place on unimproved roads; gravel and potholes can be expected. Reservations are required and should be made by Oct. 3 to guarantee a spot by calling or via the e-mail at Midewin_RSVP@fs.fed.us.