Rim Rock Drive is a scenic road in Colorado National Monument. The 23-mile drive follows the upper rim of a series of canyons, extending from the vicinity of Fruita, Colorado in the west to near Grand Junction, Colorado in the east, connecting points only eight miles apart in a straight line. The entire road has been designated a historic district on the National Register of Historic Places. The routing of the road was determined in November 1931 by National Park Service Engineer Thomas W.