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

Standing on the steep escarpment below the drawbridge you realize the
error of your judgement.  The escarpment is too steep for you to climb back
up, the only way to go is down into the moat.  Perhaps the serpents aren't
as mean as they look?