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Subject
- Hills[remove]15
- Shrubs[remove]15
- Cliffs12
- Big Bend National Park (Tex.)11
- Mountains11
- Trees11
- National parks & reserves10
- Boquillas Canyon (Big Bend National Park (Tex.))6
- Grasses4
- Roads4
- Rock formations4
- Buildings3
- Cactus3
- Fences3
- Horses3
- Reserva de la Biosfera Santa Elena-Sierra del Carmen (Mexico)3
- Rio Grande3
- Basin (Big Bend National Park (Tex.))2
- Border patrols2
- Buttes2