Waterproof, tear-resistant topographic map guide. The Bailey Gap to Calf Mountain Topographic Map Guide makes a perfect traveling companion when traversing the central Virginia section of the Appalachian Trail. Each A.T. Topographic Map Guide includes detailed topographic maps at a detail of 1 inch equals 1 mile. Each page is centred on the A.T. and overlaps with the adjacent pages so there is little chance of getting lost. Along the bottom of each page is a trail profile that shows the distance between shelters, camping areas, and trail access points.