The very essence of a church was that it have four rugged, square walls and a steeple above them.

In the rugged wall he saw a slitted window, slightly below his level.

They were the secret police, as yet unrelieved after a night's vigil about the embassy's rugged wall.

Rhodan appeared just behind the rugged wall that surrounded the criminal.

The former quarry is still recognizable from its steep, rugged walls.

And the great, rugged walls of Underland could be seen drawing closer on each side.

He swung the telescope then, studying the rugged wall, until she took it from his hand and looked herself.

Off to her right, they declined toward the plains; but in the south they gathered into a rugged wall at the head of the valley.

In its place stood a wider streambed, higher and more rugged walls.

But there was nothing at all in the rocky cave, whose rugged walls threw back the gleam of the torch.