P Pabor, William E., 11 Paleocene Epoch, 61, 63 Paleozoic Era, 26 Palisade, 17, 57, 73 water, 15 Peach orchards, 88 Pegmatite, 24 Pennsylvanian Period, 26 Permian Period, 26 Petrified Forest National Park, 129 Petroglyphs, 8 view, 9 Photographs, XII Photography directions, 86 Piceance Creek Basin, 64 Picnic areas, Devils Kitchen, 5, 86, 111, _116_ Headquarters area, 86 view, _102_ Piñon Mesa, 61, 84, 101, 107, 120 elk, 2, 109 Piñon pine, 101, 109 view, 30, 68 Plants, coalified wood, 49 cottonwood trees, view, 114 juniper, 101, 109 views, 30, 68 Mormon Tea, 111 view, 33 piñon pine, 101, 109 views, 30, 68 Pipe Organ, 30, _104_ view, _104_ Pipe Organ Overlook, 104 Piracy, _73_ drawing, 74 Plateau Creek, 15, 63 Pleistocene Epoch, 73, 76, 77, 78 Pliocene Epoch, 61, 72, 73 Powell, John W., expedition, 11 Powerplant, 88