Roof art (Horses) NE of Dexter, Webster Township, Washtenaw County, MI. Mast Rd. NE 0.5 miles from jct with Huron River Dr. on the NE side of Dexter to the picture on the SE side of the road at 4418. (12-15-07, N42 20.83 W83 52.28) Photo by Mark Comstock & Joan Berman.