The Main Hallway                                       -      N      - 
(-------------------------------------------------)     - <---(M)---> -
                                                        -      S      -

The main hallway extends northwards quite a bit.  The dark and damp
tunnel seems to close in on you as you proceed.  You see strange drawings on
the walls that look like demons.  Faint noises and screeches come from the
ground, which you cannot see.  An intense fog picks up concealing the
doorway at the end of the hall, a red doorway with a red volcano on the
door.  You gape in wonder at what it could mean.