USA, Michigan, Ottawa, Allendale Charter Township, Ravine back of Gr. River Apts.
42.977298 -85.890146 +-1274m. WGS84
Polygon drawn on Mapnik (OSM) base layer, extends N of M-45 to Nichols Drive, W of Grand R. to 48th Ave. Note second source states that Grand River Apts. are across from M-45 (p. 74 in PDF).