Hiking map of Big Bend National Park (Texas) published by National Geographic. This map is the most comprehensive recreational map for Big Bend National Park, which sits along the border of Texas and Mexico. This detailed map covers 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. Trails, trailheads, points of interest, campgrounds are included. Waterproof and tear resistant. Scale 1:133,333 & 1:24,000.