(Mushroom) NW of Michael, Crater Township, Calhoun County, IL. IL100 N. 1.1 miles from jct with Michael Rd. in Michael, W. on Crater Creek Rd. 2.8 miles to the carving on the N. side of the road at 143. (N39 15.44 W90 40.208) Photo by Jack & June Schmidt 9-18-14.