The corridor will be completely silent. Attempting to make any sound at the wrong time is a grievous, lamentable, terrible mistake. You will notice the lights in the corridor getting brighter and brighter as you make your way down towards the end, soon you will be blinded by their brilliance. If at any point the lights go out, quickly shout out, "No! Stop! What you are doing is wrong!" while backing away. If the lights do not come back on, bolt for the door you came in through. It should still be open; hopefully you aren't far enough down the hallway for it to close on you. If it does close, an eternity in hell would be far preferable to what you will suffer.