Blue Corridor                                          -      -      - 
(-------------------------------------------------)     W <---(M)---> E
                                                        -      -      -

You are in a twisting corridor made of roughly worked plain gray stone. 
The stone is cracked and broken, making it loose and unstable, giving your
the impression that it may cave in on you at the slightest sound or
movement.  Cobwebs drape the room from floor to ceiling and from wall to
wall, though not as thickly as in other areas.  You cringe with revulsion as
you can just barely make out a brightly-colored mosaic of blue tiles is set
in a most disturbing pattern in the floor here.  To the west you can see
where the corridor has caved in.  The corridor continues to the east.