Alan Cressler:
Adiantum capillus-veneris, Cueva Larga, Big Bend Ranch State Park, Presidio County, Texas 1
Alan Cressler:
Adiantum capillus-veneris, Ojito Adentro, Bofecillos Canyon, Big Bend Ranch State Park, Presidio County, Texas 1
Alan Cressler:
Ariocarpus fissuratus, Fresno Canyon, Big Bend Ranch State Park, Presidio County, Texas 1
Alan Cressler:
Ariocarpus fissuratus, Fresno Canyon, Big Bend Ranch State Park, Presidio County, Texas 2
Alan Cressler:
Ariocarpus fissuratus, Fresno Canyon, Big Bend Ranch State Park, Presidio County, Texas 3
Alan Cressler:
Boquillas Formation, and Buda Limestone, Late Cretaceous age, Mania Arriba, Big Bend Ranch State Park, Presidio County, Texas 1
Alan Cressler:
Cueva Larga, Big Bend Ranch State Park, Presidio County, Texas, Russell McLester 1
Alan Cressler:
Cueva Larga, Prehistoric Pictograph, Big Bend Ranch State Park, Presidio County, Texas 1
Alan Cressler:
Cueva Larga, Prehistoric Pictograph, Big Bend Ranch State Park, Presidio County, Texas 1 Enhanced
Alan Cressler:
Cueva Larga, Prehistoric Pictographs, Big Bend Ranch State Park, Presidio County, Texas 1
Alan Cressler:
Cueva Larga, Prehistoric Pictographs, Big Bend Ranch State Park, Presidio County, Texas 1 Enhanced
Alan Cressler:
Cueva Larga, Prehistoric Pictographs, Main Panel, Big Bend Ranch State Park, Presidio County, Texas 1
Alan Cressler:
Cueva Larga, Prehistoric Pictographs, Main Panel, Big Bend Ranch State Park, Presidio County, Texas 2
Alan Cressler:
Cueva Larga, Prehistoric Pictographs, Main Panel, Big Bend Ranch State Park, Presidio County, Texas 2 Enhanced
Alan Cressler:
Cueva Larga, Prehistoric Pictographs, Main Panel, Big Bend Ranch State Park, Presidio County, Texas 3
Alan Cressler:
Cueva Larga, Prehistoric Pictographs, Main Panel, Big Bend Ranch State Park, Presidio County, Texas 4
Alan Cressler:
Cueva Larga, Yedra Canyon, Big Bend Ranch State Park, Presidio County, Texas 1
Alan Cressler:
Cuevas Amarillas, Cupules, Big Bend Ranch State Park, Presidio County, Texas 1
Alan Cressler:
Cuevas Amarillas, Mortar and Cupules, Big Bend Ranch State Park, Presidio County, Texas 1
Alan Cressler:
Cuevas Amarillas, Mortar, Big Bend Ranch State Park, Presidio County, Texas 4
Alan Cressler:
Cuevas Amarillas, Mortar, Big Bend Ranch State Park, Presidio County, Texas 6
Alan Cressler:
Cuevas Amarillas, Mortars, Big Bend Ranch State Park, Presidio County, Texas 1
Alan Cressler:
Cuevas Amarillas, Mortars, Big Bend Ranch State Park, Presidio County, Texas 2
Alan Cressler:
Cuevas Amarillas, Mortars, Big Bend Ranch State Park, Presidio County, Texas 3
Alan Cressler:
Cuevas Amarillas, Mortars, Big Bend Ranch State Park, Presidio County, Texas 5
Alan Cressler:
Cuevas Amarillas, Prehistoric Negative Hand Prints, Big Bend Ranch State Park, Presidio County, Texas 1
Alan Cressler:
Cuevas Amarillas, Prehistoric Negative Hand Prints, Big Bend Ranch State Park, Presidio County, Texas 2
Alan Cressler:
Cuevas Amarillas, Prehistoric Negative Hand Prints, Big Bend Ranch State Park, Presidio County, Texas 3
Alan Cressler:
Cuevas Amarillas, Prehistoric Pictographs, Big Bend Ranch State Park, Presidio County, Texas 1
Alan Cressler:
Cuevas Amarillas, Prehistoric Pictographs, Big Bend Ranch State Park, Presidio County, Texas 10
