There was a small door in the corrugated iron wall of the housing.

Climbing over the iron wall of the turret was a bit easier, but not much.

If she was ever going to slip past his iron wall, it would have to be with the greatest of care and subtlety.

I drew a cold iron wall around my heart.

I could just hear him laughing through the iron walls.

Better that I stayed behind iron walls with sister dear.

Then it was gone, instantly slammed behind the iron wall of his control.

And the black iron walls of the prison would fall before him.

In five steps I came to an iron wall, made of plates bolted together.

Nor all the iron walls of hell Could keep me from his side.