A Dark Hallway                                         -      N      - 
(-------------------------------------------------)     - <---(M)---> -
                                                        -      S      -

The hallway is ominously dark and cold.  Peering through the gloomy
darkness you see that the walls and floors of the hallway are devoid of any
decoration or distinctive markings.  You sure hope you don't get lost
wandering these hallways.  The sound of your rapid heartbeat and cautious
footsteps mingle with the sounds echoing from some unknown source.