Valley, chiefly in Virginia, U.S. The valley is about 150 mi (241 km) long and 25 mi (40 km) wide, extending southwest from Harpers Ferry, W.Va.
It lies between the Blue Ridge Mountains and the Alleghenies . It is drained by the Shenandoah River. The route of the famous 19th-century Valley Turnpike (also now an interstate highway) was early used by Native Americans and later became a main artery for westward expansion. The Shenandoah Valley was the scene of military operations throughout the American Civil War ; today its many parks, limestone caverns, and scenic drives are tourist attractions.