A Narrow Tunnel                                        NW     -      - 
(-------------------------------------------------)     - <---(M)---> -
                                                        -      S      -

You are in a narrow tunnel.  The walls seem to come together and the air
seems smoggy and thick as you walk through the tunnel.  On the walls are
torches, which provides light for the tunnels.  In some areas on the wall,
the rock is loose from the constant tremors.  Thick wooden supports are
propped up against the wall in these places.  You begin to sweat more and
more as you venture down the narrow pathway.