A Large Cavern                                         -      N      - 
(-------------------------------------------------)     W <---(M)---> E
                                                        -      -      -

The stream of molten lava abruptly ends as you enter into a large cavern.
Worn by the action of water over the many eons, large stalagtites have been
formed on the ceilings.  Towering stalagmites rise from the floor struggling
to reach the ceiling high above.  The trickle of water can be heard, echoing
throughout the large cavern.  You can hear the shrieking and high-pitched
shrills of some strange animals unseen in the darkness.  
A large hairy bat with no eyes hangs leisurely from the ceiling.