A Rocky Perch                                          -      N      - 
(-------------------------------------------------)     - <---(M)---> -
                                                        -      S      -

You exit the aerie and step onto a thin, rocky ledge on the side of the
mountain.  The dragon perches here and uses its high vantage point to search
for suitable prey.  You now have a very good idea where the town's livestock
has been disappearing to.  You take a step back from the ledge as it
crumbles beneath your feet.