An Obsidian Tunnel                                     -      N      - 
(-------------------------------------------------)     - <---(M)---> -
                                                        -      S      -

This perfectly hewn passageway is made of shiny black obsidian.  You
marvel at the smoothness of it's design.  The tunnel heads south but it's
too dark to see anything beyond this room.  As you walk by the walls reflect
your light dully, it actually seems to absorb it.  The faint reflections
seems to be a malign manifestation of your psyche.  
     One miserable gold coin.