Stone buildings were built from limestone quarried from the cap rock of the west mountain.

It waited, a universe of water hidden beneath the cap rock.

The canyon was one of those unexpected gashes in the cap rock that gave no indication of its presence until you came right on it.

The cap rock causes the top of a butte to be flat.

Buttes usually have a hard, erosion resistant cap rock on the top.

A dark layer at the top forms a cap rock that protects the underlying layers from erosion.

These slopes and cap rocks were to be used to advantage by the Apaches in 1880.

An hour later, when I topped out on the cap rock again, there was no sign of pursuit.

Down among the willows he had a fire going that had not been visible from the cap rock.

Ahead of me, almost lost in the blue of distance, the cap rock seemed to break off.