He walked out onto the terrace, which was long but narrow, and looked over the chest-high wall.
The way up was steep and stony, the summit crowned by a chest-high wall of tumbled rocks.
Peering over the chest-high wall, he saw a movie screen.
Then he smiled, climbed on the chest-high wall surrounding the patio, nodded, then waved.
Ten paces across, the tower top was, encircled by a chest-high, crenellated wall.
People disappeared behind the chest-high walls of their cubes, ducked through doors, and hustled off toward the copy room.
Rather than vault the chest-high irregular wall, Gerswin walked around it.
A tall Frenchman turned from the emergency door which he had been examining and walked towards the chest-high wall.
Beyond the chest-high wall across the main avenue, feeding time at the Zoo was over and the whole street was quiet now.
The man took three steps up to the chest-high wall.