The Great Valley, a major feature of the Appalachians, extends from New York to Tennessee.

This valley is part of the larger Valley and Ridge province and runs through several states, including Pennsylvania, Virginia, and into Tennessee. The Great Valley is characterized by its fertile land and is an important agricultural area, supporting various crops and livestock. Its location between the Appalachian ridges provides a unique geological and ecological environment, contributing to the diverse landscapes found in the Appalachian region.