A Dimly Lit Tunnel                                     -      -      - 
(-------------------------------------------------)     W <---(M)---> E
                                                        -      -      -

You are walking along a darkened tunnel.  The walls are roughly hewn as
though little care was taken to carve this tunnel from the solid stone
surrounding it.  To the east you can hear the faint rustling of wings, to
the west your vision cannot penetrate the gloom, but you can hear the
muffled sound of running water.