Great Appalachian Valley

The Great Appalachian Valley is one of the major landform features of eastern North America, a vast trough of connected valley lowlands that forms the central feature of the Appalachian Mountains system. It runs roughly 1,200 miles from Quebec in the north to Alabama in the south, crossing Vermont, New York, Pennsylvania, New Jersey, Maryland, Virginia, West Virginia, Tennessee and North Carolina along the way. It marks the eastern edge of the Ridge and Valley physiographic province and has long served as a natural north-south travel corridor, used since prehistoric times. Different sections of the valley carry their own regional names, the Shenandoah Valley among them. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/