Bowlder

Between was the wild valley where cattle grazed among the trees and the massive bowlders.

Here lay a desolate valley—a shallow, narrow valley dotted with stunted trees and covered with many great bowlders.

His back humped; like a bowlder hurled down a mountain slope he made his rush, and nothing could swerve him.

The trees on the summit bent in the wind; spray leaped about the bowlders where the white foam rolled.

The first step in the construction was to outline the periphery of the base with bowlders of uniform size and weighing, perhaps, fifty pounds each.