From the hallway, Drexler heard the elevator clank open.
The lock groaned, and the door clanked open.
Presently a gate clanked open and a black, cave-like opening appeared behind it.
Then the door he had not seen since his entrance into the prison corridor clanked open.
Scaf sighed, hearing the door clank open at the far end of the corridor and footsteps approach.
He waited, listening, then heard the door clank open and the two men come out.
The attic exhaust fan clanks open and shut.
But the garage door was electric, and clanked; he'd heard these doors clank open and shut his last time here.
The door in the back of the lock clanked open.
Despite the danger, steel shutters clanked open on the north side of many domed huts.