Orange Cliffs 54 The Benchlands 58 The Maze and Land of Standing Rocks 58 The Needles district 60 Salt, Davis, and Lavender Canyons 64 The Needles and The Grabens 73 Canyons of the Green and Colorado Rivers 85 Entrenched and cutoff meanders 86 Green River 87 Colorado River 96 Summary of geologic history 112 Additional reading 117 Acknowledgments 118 Selected references 118 Index 123 Illustrations Page Frontispiece. Looking north from Devils Lane near Silver Stairs. Figure 1. Map of Canyonlands National Park 6 2. Pictographs on wall of Horseshoe Canyon 10 3. The All American Man 10 4. Tower Ruin 11 5. Newspaper Rock 13 6. Cave Spring Line Camp 15 7. Canyonlands National Park and vicinity 19 8. Shallow inland sea 21 9. Rock column of Canyonlands National Park 22 10. Section across Canyonlands National Park 24 11. Aerial view of The Neck and Shafer Trail 28 12. Merrimac and Monitor Buttes 29 13. Cane Creek anticline (viewed from Dead Horse Point) 30 14. Cutaway view of anticline 31 15. Looking southwest from Dead Horse Point 32 16. Shafer Trail 35 17. Natural tanks 37 18. Canyon Viewpoint Arch 37 19. Index map showing photograph localities 38 20. The White Rim 40 21. Monument Basin from Grand View Point 41 22. Monument Basin from the air 42 23.