A Gargantuan Cavern                                    -      N      - 
(-------------------------------------------------)     W <---(M)---> E
                                                        -      S      -

You have entered a massive cavern the size of a small town.  As you look
across the cave, you see a large river running northeast to southwest, with
a large bridge in the northeast section of the cave.  Strangely enough, it
appears to be made of the skeleton of some large deceased creature, which
sound of rushing water echoes throughout the cavern, and a depressing gloom
permeates the place.  
A small black salamander crawls around the cavern in a search for food.