He pointed off to one side, where an iron ladder ran up the wall to the ceiling.
The opening through which he peered was some ten feet off the floor; an iron ladder led all the way down.
Then he came to an iron ladder set at his feet, disappearing down into the darkness.
The iron ladder went right down inside the wall and ended below the tower itself.
Then he turns and climbs the iron ladder to the bridge.
They went up on deck, climbing the old iron ladder.
There was an old iron ladder fastened to the side of the well.
I don't know how far the iron ladder goes down though.
Up the rope they went, and soon found the iron ladder.
The rock is now accessible through an iron ladder running from its base to the top.