A Magically Illuminated Hallway                        -      N      - 
(-------------------------------------------------)     W <---(M)---> -
                                                        -      S      -

This is a long hallway running north and south.  The walls, ceiling and
floor are made of dark colored stone.  The seams where the blocks of stone
join each other are very difficult to locate.  High on the walls are smooth
depressions that a strange glow emanates from, it is not terribly bright but
serves nicely to light your way.