BY TRAIL
| Zion Lodge to Great White Throne | 2 |
| Zion Lodge to The Narrows | 6 |
| Zion Lodge to Summit of Angels Landing | 2.5 |
| Zion Lodge to Observation Point | 12 |
| Zion Lodge to West Rim | 12 |
| Zion Lodge to Ranger Station | 5 |
| Zion Lodge to Summit of Lady Mountain | 2 |
| Bryce Canyon Lodge to floor of Canyon and return | 1 |
| Bryce Canyon Lodge to Tropic | 11 |
| Bright Angel Camp to Bright Angel Point | .5 |
| Bright Angel Camp to Point Imperial | 9 |
| Bright Angel Camp to Cape Final | 12 |
| Bright Angel Camp to Cliff Spring | 15 |
| Bright Angel Camp to Cape Royal | 16 |
| Bright Angel Camp to Cliff Dweller Spring | 1 |
| Bright Angel Camp to Point Sublime | 35 |
| V. T. Park Tourist Ranch to Point Imperial | 22 |
| V. T. Park Tourist Ranch to Cape Final | 25 |
| V. T. Park Tourist Ranch to Point Sublime | 23 |
Interior of Guest Lodge, Zion National Park and Bryce Canyon
Stratified Rocks of Cedar Breaks, Bryce Canyon, Zion Canyon, Grand Canyon and Intermediate Regions
Rearranged and visualized principally from unpublished studies of Willis T. Lee, by courtesy of the National Parks Association.
These strata presumably were once continuous over the entire Plateau Region and the Grand Canyon. Many were much thicker than now, having been eroded during long periods when the surface was temporarily lifted above sea level. Altogether they may cover a creative period exceeding ninety million years. Strata are said to be unconformable when they do not lie in regular, parallel sequence.
Read table from bottom upward for historical sequence.
1.—FROM BRYCE CANYON TO THE GRAND CANYON RIM
Cedar Breaks, some 2,000 feet higher than Bryce Canyon, is eroded from similar formation to that at Bryce Canyon.