It was a large room, but with a low ceiling and dark walls.

It was as if a blank, dark wall had been built up.

Suddenly a human form seemed to emerge from the dark wall.

Up to now he had paid little attention to the dark wall.

They both looked to the east, uphill at the dark walls.

He wanted to investigate the dark wall and find out what lay behind it.

In the distance, but not so very far away, a dark wall rushing toward them.

They went into the den with the dark blue walls.

Ahead, she could see the dark wall of her destination.

Never was there more than a step or two to either side of their way that didn't bring up the dark walls.