A Dead End                                             -      -      - 
(-------------------------------------------------)     - <---(M)---> -
                                                        -      S      -

You have reached a dead-end room.  Like the previous room, this one is
lit by torches instead of globes.  This suggests that your impression that
large hole in the floor that appears to be a slide of some sort going down
to the next level.  You wonder if it is possible to climb back up or if
there is perhaps another way back to this level that you have missed.