Wikimedi'Òc

Ventana Cave.jpg - Tillman

Skeleton Cave.jpg - File Upload Bot (Magnus Manske)

The American Museum journal (c1900-(1918)) (18156777292).jpg - Fæ

Peppersauce Cave entrance.jpg - Qzd

Superior-Pinal City-1878-4-Gold Cave.jpg - Marine 69-71

Grand Canyon National Park- Redwall Limestone 0507 (7706754222).jpg - Killarnee

Archeology of Exhausted Cave - a study of prehistoric cultural ecology on the Coconino National Forest, Arizona (IA CAT80727683).pdf - Fæ

Grand Canyon National Park, Redwall Limestone 0294 (8000417616).jpg - Tm

Archeology of Exhausted Cave - a study of prehistoric cultural ecology on the Coconino National Forest, Arizona (IA CAT80727683) (page 135 crop).jpg - Ooligan

Cañón de Chelly 1989 23.jpg - LBM1948

Eagle Head formation near Monument Valley.jpg - Jbro1186