1.   Balconies and window boxes along canyon walls maintained refugia of plants and animals hundreds of miles from their core distributions.

2.   It was a telltale sign that water was seeping through the canyon walls, softening the mica shale and conglomerate abutment.

3.   Shells-ells-ells echoes neatly down the steep canyon walls.

4.   The canyon walls were finally clean, the abutments sculpted, the cofferdams in place.

5.   The canyon walls, rock formations and spires on the rim looked surreal, like a backdrop in a movie set.

6.   The edge of sun climbed the left-hand canyon wall.

7.   The trail climbs more steeply on the chaparral cloaked canyon wall.

8.   The canyon walls came close together as they rode in gathering darkness.

9.   And that he carved his name into the sandstone canyon walls to prove it.