Poorly-Lit Hallway                                     -      N      - 
(-------------------------------------------------)     - <---(M)---> -
                                                        -      S      -

You are standing in a dark and cold hallway.  Awful smells filter
throughout the air, and small critters scurry out of the way of your light. 
A single candle lights the hall, and allows just enough light to notice that
this hallway connects several prison cells together.