The Guards' Hallway                                    -      N      - 
(-------------------------------------------------)     - <---(M)---> -
                                                        -      S      -

You have come across a hall which looks to be used primarily by the guard
patrol.  The floor and walls are made from unfinished stone.  The only light
is that coming from the end of the hall.  
A castle janitor is mopping the floors and dusting the statues here.