An Indigo Tunnel                                       -      -      - 
(-------------------------------------------------)     W <---(M)---> -
 WARNING: You are in a NEUTRAL PLAYER KILLING room.     -      -      -

As you continue down the tunnel, you notice that the hue of the stone
begins to shift from the hideous shade of yellowish-green to a more
attractive indigo.  You turn to look back, but you realize that the path has
shifted somehow, leaving only the tunnel running to the west.  There is
obviously some kind of magic at work here, since such passages could not
have been created by hand.