The Sky Ride 37 The First Water Crossing 39 Colonel Charles Goodnight’s Dugout 39 The Lighthouse 39 Capitol Peak 40 Fortress Cliff 40 The Rock Garden 40 The Devil’s Slide 40 The Turnaround 41 Hiking 43 Horseback riding 43 Camping and picnicking 43 Photography 43 Panhandle-Plains Historical Museum 45 Selected references 47 Glossary 48 Index 50 Illustrations Figures— Page 1. Aerial View of Palo Duro Canyon Frontispiece 2. Place map of Palo Duro Canyon 4-5 3. Indian carving on sandstone boulder 6 4. War dress of Comanche Chief Quanah Parker 7 5. Generalized geologic map of the Texas Panhandle 9 6. Geologic time scale 11 7. Generalized geologic map of Palo Duro Canyon State Park 14-15 8. Joints and gypsum veins in Quartermaster Formation 17 9. Syncline in Quartermaster red beds 18 10. Reduction halos in Quartermaster shale 20 11. Cross-bedded boulder of Trujillo sandstone 20 12. Panoramic view of canyon showing major rock units exposed in canyon 21 13. Phytosaur skull 22 14. Skeleton of _Buettneria_ 24 15. Mortar hole made by Indians 25 16. Rock pedestal near the Lighthouse 25 17. Outcrop of Ogallala caliche 26 18. Life-sized model of shovel-jawed mastodon 27 19. Fossilized carapaces of Pliocene tortoises 27 20. Talus slopes and “hoodoo” on Capitol Peak 31 21. Entrance to Palo Duro Canyon State Park 34 22.