The Cave Mouth                                         NW     N     NE 
(-------------------------------------------------)     - <---(M)---> -
                                                        -      S      -

This small section of the cave is illuminated by light coming from the
entrance, but you can tell that the interior of the chamber is quite dark. 
You recall hearing stories that Hellbent Mountain exists in a space between
worlds, and is located in the physical and ethereal planes at the same time.
While you once assumed that these were just children's tales, you are no
longer so sure.