| 1 | The team climbed the north face of the mountain. | |
| 2 | The setting sun strikes the Grand Canyon's North Rim. | |
| 3 | Sunlight from the south leaves north-facing slopes in shadow. | |
| 4 | The northern flank of the mountain collapsed, producing the largest landslide in recorded history. | |
| 5 | The observatory is located on the northern slope of the mountain, 6 kilometers (4 miles) away from and 800 meters (2, 600 feet) lower than the summit. |
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