Exiting Bobcaygeon , the former highway serve cottages along the northern shore of Pigeon Lake and Little Bald Lake . After passing Nogies Creek , the highway descend a hill and encounter the Canadian Shield for the first time . The road run along the border of the Precambrian shield and the Ordovician limestone plateau en route to Burleigh Falls . The shield lie to the north and is overlain by the plateau to the south . The highway turn south at Flynns Corner , intersecting former Highway 507 . It enter the town of Buckhorn from the north , then drivers must turn to remain on the route , which exit the town to the east . Between Buckhorn and Burleigh Falls , the highway serve the cottages that line the northern shore of Lower Buckhorn Lake .