Stone Corridor                                         -      #      - 
(-------------------------------------------------)     - <---(M)---> -
                                                        -      S      -

You are in a narrow corridor made of plain stone, roughly worked. 
Cobwebs strech from floor to ceiling and wall to wall.  You cringe with
revulsion as you brush them aside so that you can pass.  To the north, there
is a pair of extrememly heavy and sturdy doors.  Cold, chill, and musty air
oozes from under the doors making your skin crawl.