A Three Way Intersection                               NW     N     NE 
(-------------------------------------------------)     - <---(M)---> -
                                                        -      -      -

Of the three exits you see before you, two lead to the exit from the
constellations and their souls, the other path, to the north leads to the
center of the plane.  From what you remember of the warning, there are two
constellations yet left to pass through that are not placed around the
center of the plane.  You feel sure that what lies to the north will be more
difficult than what you have faced so far.  
A thorny, red-veined vine twines its way around your feet.