National Geographic's Allegheny Trails Illustrated map pack covers Pennsylvania's only national forest. Located in the foothills of the Appalachian Mountains, the Allegheny National Forest is comprised of plateaus rising to about 2,300 feet in elevation and valleys dropping to about 1,000 feet above sea level. The forest encompasses more than 500,000 acres and includes land in Elk, Forest, McKean, and Warren counties in the northwest corner of the state. With miles of mapped trails, these maps can guide you off the beaten path and back into some of the region's most breathtaking scenery. The basemap includes contour lines, shaded relief, and elevations for peaks and passes. The Allegheny National Forest Map Pack includes: Map 738: North Allegheny Map 739: South Allegheny