Ruin Park 9, 75 Ruins 64, 70 Anasazi 9, 68 Fort Bottom 91 granaries 9, 68 Keyhole 67 Tower 9, 68 S Salt beds 43, 53, 79, 108, 113 Salt Canyon 9, 64, 66 Salt Creek 106 San Rafael Desert 54 San Rafael Swell 116 Sedimentary rocks 20, 112 ages 20, 112 cement 25, 65 color 23 elaterite 58 environments of deposition 20, 113 facies changes 34, 47, 58, 113 fossils 76, 101 gypsum 79, 113 “layer-cake geology” 23 salt 43, 53, 79, 108, 113 sculpture by erosion 25 Sevenmile Canyon 28 Shafer Basin 100 Shafer dome 31, 49, 53, 101 Shafer limestone 31, 54 Shafer Trail 34 Silver Stairs 2, 79, 80 Six-Shooter Peaks 61 SOB Hill 2, 75 Spanish Bottom 80, 85, 108 Spanish explorers 12 Springs 36 Squaw Flat Campground 2, 63 Steer Mesa 46 Stillwater Canyon 5, 40, 43, 92 Sunset Crater National Monument 116