Except for the metal walls, it could have been any office on the world of Path.

A metal wall rose before him, stretching up a good three stories.

In case of fire, a metal wall would separate the stage from the theater.

On his left he passed the metal wall of a workshop.

The reach from the metal wall to the window was a long one.

He found himself in a glowing room with metal walls.

Up ahead, though, the corridor seemed to end in a metal wall with a single small door set into it.

I slowly sat up and leaned my back against the metal wall.

I guess I've spent too much time behind metal walls.

The grid is held in place by thin metal wall.