Large Passageway                                       -      -      - 
(-------------------------------------------------)     - <---(M)---> E
                                                        SW     -      -

This passageway is very large, about 30 feet high in some places.  For
some strange reason the heat from the lake does not enter this passageway. 
There are strange markings all over the walls in many places.  Screams are
coming from very nearby as a strong sense of evil suddenly fills the room.