The canyon was narrowing at a fearsome rate.

Almost halfway into our six-hour hike, the canyon suddenly narrowed to about 30 feet across with sheer walls rising on either side.

At one point the canyon narrowed to 50 feet.

As he remembered the lay of the land, the canyon narrowed and the floor rose dramatically toward the west.

After about an hour, the canyon narrowed, and we entered the oak grove at the base of the ruins.

Now the canyon narrowed and the rocky walls towered above him.

Where he stood the canyon had narrowed momentarily, choked by avalanches on either side.

The canyon at this point narrowed to no more than fifty feet wide, and the cast, while not easy, was to a large, stationary target.

The canyon deepened and narrowed, and the walls grew steeper.

Then the canyon narrowed to a crevasse again, and they passed by a trickle of water.