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Subject
- Hills[remove]14
- Mountains[remove]14
- Shrubs[remove]14
- Big Bend National Park (Tex.)9
- Cliffs9
- Trees9
- National parks & reserves8
- Boquillas Canyon (Big Bend National Park (Tex.))5
- Roads5
- Canyons4
- Fences4
- Cactus3
- Horses3
- Lost Mine Trail (Big Bend National Park (Tex.))3
- Reserva de la Biosfera Santa Elena-Sierra del Carmen (Mexico)3
- Rio Grande3
- Barbed wire2
- Basin (Big Bend National Park (Tex.))2
- Border patrols2
- Buildings2