"The other side of the river was a sheer wall, straight up to the ceiling."

It looked out over sheer walls to the valley beyond.

There was nothing but the snow and the sheer walls of earth.

The river's at their back, and they're up against what's pretty close to a sheer wall.

The rest of the way was still difficult, but there were no more sheer walls.

They can no longer see into valley, as sheer walls of rock are on either side.

He seemed to move out along the sheer wall itself.

The only open windows to which I had access faced a sheer black wall a hundred feet away.

He peered down a sheer wall three stories to the street.

Beneath that window was a sheer wall, almost thirty feet high.