Above Collapsing Hole                                  -      -      - 
(-------------------------------------------------)     - <---(M)---> E
                                                        -      -      -

You are standing in a mostly collapsed hallway.  You find that you can no
longer continue into the western section of the hallway as it has been
completely caved in.  You see that you need to move carefully in this
unstable area as the floor has collapsed, leaving a hole through which dirt
and other debris pours.  The only other way out of this unstable area is to
the east.