A Strange Corridor                                     -      N      - 
(-------------------------------------------------)     - <---(M)---> -
                                                        -      S      -

You enter a strange tunnel, carved from the surrounding bedrock.  You see
a few torches placed along the walls, magically burning underwater.  Small
rocks and piles of dirt have collected along this path, giving the impres-
sion that its not very often traveled.