Tunnel of Ice                                          -      N      - 
(-------------------------------------------------)     - <---(M)---> -
                                                        -      S      -

The ice that you are walking on seems to be as solid as the brick paths
of your hometown.  Touching the walls, the ice there doesn't melt, almost as
if it would never melt.  Down the tunnel, more sounds of scrapping metal on
ice, as well as some glutteral language unknown to the modern world.  The
ice tunnel seems to rotate around you, making you very dizzy, so that your
steps start to falter.