Question: Which state is the state park, which is named after the network of trails used by Native Americans to navigate through the Great Appalachian Valley, located?
Sentence (from "Shenandoah Valley"): The valley is bounded to the east by the Blue Ridge Mountains, to the west by the eastern front of the Ridge-and-Valley Appalachians (excluding Massanutten Mountain), to the north by the Potomac River and to the south by the James River.
Relevant evidence: No