sentences:  US 250 passes to the north of Jack Mountain and follows Crab Creek through a gap in Doe Hill to McDowell, where the highway crosses the Bullpasture River.The highway continues across Bullpasture Mountain and crosses the Calfpasture River, the other chief tributary of the James River.After passing through Shaws Ridge, US 250 goes through the hamlet of Head Waters and has a curvaceous crossing of Shenandoah Mountain, where the highway enters Augusta County.