The door leads you into a dark hallway.

You hear a rumbling behind you and turn to see a huge boulder heading right towards you! You turn to run, but the boulder is quickly catching up. Desperately, you look for an escape. There's a door 20 feet away, but you don't know what lurks within. Further down the hallway, you see an empty stairwell.

What do you do?

Run for the stairwell!

Duck into the room!