Photo #28460 - Welcome to West Virginia!. - Photo West Virginia welcome highway sign Entering the Monongahela National Forest. The Monongahela is located in the Appalachian Mountains of east central West Virginia at elevations of 1,000 to 4,861 feet. Start / Finish of Road Map Highway Travel Guide. - S&e Western Virginia is mountainous, covered by the Allegheny and Blue Ridge mountains with the great Shenandoah Valley falling between the ranges. The central piedmont region, with its rolling hills, flattens out into the sandy coastal plain toward the Atlantic Ocean.