T Taft, William Howard, 1 Tertiary Period, 61, 71, 76 Thunderstorms, damage, 97, 108, 118 Tools, prehistoric people, 8 Trails, 1 Black Ridge, _99_ builder, 1 Canyon Rim, _102_, 104 views, 103, 104 Coke Ovens, 105 Grand View, 105 Liberty Cap, 90, 108 Lizard Canyon, 97 Lower Ute Canyon View, 109 Monument Canyon, 94, _105_ No Thoroughfare Canyon, 1 Otto’s, 97, 104, 114 Serpents, 1, 2, _111_ views, 30, 49, 66, 113, _114_ Ute Canyon, 108, 109 Window Rock Nature Trail, _102_, 104 Triassic Period, 27, 28, 29, 35 Trip guides, East Entrance to Grand Junction, 118 Fruita to West Entrance, 96 Glade Park, 119 Grand Junction to West Entrance, 88 Little Park Road, 121 West to East Entrances, 97 _Tyrannosaurus_, 60