A Steep Escarpment                                     -      -      - 
(-------------------------------------------------)     - <---(M)---> E
                                                        -      -      -

Standing on the steep escarpment below the drawbridge, you realize the
error of your judgement.  It is too steep to climb back up, leaving your
only path out through the moat.  The New Kolvir moat's notorious reputation
states that it is one of the most complex moat and drainage systems in the
world.  Sickly sea creatures swim in the dark depths of the water... 
Perhaps the serpents aren't as mean as they look?