Walk away from the stairs through the doorway on the left. Enter the second door across the hall and wait near the locker area doorway.
Turn until you see the little lamp on the table. Walk forward through the open doorway and through to the open doorway farthest to your right. Continue walking forward to reach the end of the wall on your right with the rocks. Stop and wait.
Go through the double doors to the left of the stairs. Proceed through the door on the left. Wait at the end of the hall.