In a steep canyon, the side walls of the canyon can also be undercut.

Exposed graywacke can be observed on high ridges and on the steep canyon walls.

The remaining survivors leave the camp, and travel to the edge of a steep canyon.

Urban development spread for some seven miles along the single, narrow road winding up the steep canyon floor.

The abundance of bats, swifts, and riparian birds provides ample food for peregrines, and suitable eyrie sites are plentiful along the steep canyon walls.