(Chair) NNW of Bunker Hill, Pipe Creek Township, Miami County, IN. US31 N. 2.2 miles from jct with IN218 1.3 miles W. of Bunker Hill to the chair on the E. side of the road just N. of CR500S. (3-25-08, N40 41.58 W86 07.65) Photo by Mark Comstock & Larry Baker.