(MI-81-132) E. of Ann Arbor, Superior Township, Washtenaw County, MI. Plymouth Rd. E. 1.65 miles from jct with US23 exit 41 on the E. side of Ann Arbor, S. on Cherry Hill Rd. 0.1 miles, E. on Waterfall Ln. 0.1 miles to the turret on the S. side of the road at 5260. (N42 18.615 W83 39.251) Photo by Mark Comstock 2-10-24.