Gaseous Swamp                                          -      N      - 
(-------------------------------------------------)     W <---(M)---> -
                                                        -      -      -

Noxious gas bubbles up from the underground lake helow.  Trail of hot gas
rise to the ceiling, filling the room with a thick cloud of mist.  Greenless
trees and strange vegitation line the floors, and the from the ceilings hang
in long tangly vines.  Small white insects fly about, avoiding the echoing
cries of some strange flying creature.