End of the Hollow Log                                  -      -      - 
(-------------------------------------------------)     - <---(M)---> -
                                                        -      -     SE

After all that work you find yourself at a dead end.  The end of the log
is packed with earth and impassable.  You stop and consider how hard it's
going to be to try and get out going backwards is going to make the wiggling
nearly impossible.  You suck in your breath to make yourself smaller and
hope you dont get stuck trying to move.