Re: (TFT) Forge of Fury. --> Ricks comments.

[Stan <srydzews@ix.netcom.com>]

Rick,
  Here's a bit of dwarven engineering you might like.  I used it in a a 
Warhammer FRP game; it's a scheme for an underground canal.

Step one.  The dwarves mine a straight shaft from one side of a mountain range 
to another (no small matter, of course, but if those maniacs built Moria this 
should be a reasonable proposition).  The shaft slopes very gently downward from 
one side of the range to the other.

Step two.  Divert an underground river to flow through the shaft.

Step three.  Divert a strong continual flow of warm air into the shaft, starting 
at the 'low' end.  (Where does this air come from?  Forges, perhaps, or magma 
for something more exotic.)  Being warm, the air will flow up the shaft.

So you have water flowing in one direction and a constant air current in the 
other direction.  This gives easy travel in either direction.  To go downstream, 
furl your sail and ride the current.  To go upstream, use sails.  There's no 
annoying tacking and maneuvering, the wind is blowing right in the direction you 
want to go.

Of course the current has to be pretty moderate or the wind would have to be 
gale force.  And it's probably not sufficient to have a single source of warm 
air, there would need to be several spaced along the canal's length.  But once 
set up it's pretty low maintenance.  In any case it's a lot easier than most 
canal schemes, with their towpaths and whatnot.
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