This Trails Illustrated topographic map is the most comprehensive recreational map for Big Bend National Park, which sits along the border of Texas and Mexico. The map includes Big Bend National Park, Portions of Big Bend Ranch State Park, Black Gap Wildlife Management Area, the Chisos Mountains, Sierra del Carmen, and Sierra del Caballo Muerto. A necessity for exploring in the outdoors, this map is printed on waterproof, tear-resistant material, and also includes UTM tick marks for use with your GPS unit.