(Waubonsie Trail #3, c8', 15-89-(a) across a ditch in Waubonsie Park in Cantril, Van Buren County, IA. North St. W. 0.25 miles from jct with Grant St. to the 15-89-a on the N. side of the road, walk NE on the trail 100 yds to the bridge. (9-5-09, N40 38.767 W92 04.322) Photos by Robert Vaughn.