A Large Cave                                           -      N      - 
(-------------------------------------------------)     W <---(M)---> E
                                                        SW     S     SE

The interior of this cave is quite dark, and without a light source you
don't stand much of a chance of finding your way around.  If the stories are
correct, then the small passageway to the north must lead to the room where
the Grimoirium Magica was discovered.  You might also be able to discover a
route leading down into the depths of the mountain, but exploring alone
could prove quite dangerous.