

Fig. 1South Rim terraces under broken evening cloud
Landform
A mile-deep chasm cut through the Colorado Plateau. Layered Paleozoic rock, buttes, and a winding river corridor.
Field note
The South Rim sits on the Kaibab Plateau. Storm light and late sun turn the inner gorge copper, then violet. The river is a thin green thread nearly a vertical mile below the overlooks.














