(Libery Trail, 30', 22-63-s) across a stream NE of Walled Lake, Commerce Township, Oakland County, MI. Martin Pkwy N. 0.6 miles from jct with Pontiac Trl to the bridge on the E. side of the road. (N42 33.745 W83 27.060) Photos by Mark & Gordie Comstock & Larry Baker 3-3-20.