On Dec 24, 8:11*pm, wrote:
On Sat, 24 Dec 2011 16:49:07 -0000, "Doctor Drivel"

wrote:
divide a community. That is whay sopme are on the ouskirst of a
village/town. *Run the lines under for 1/2 miles or so quite cheaply with
an
undergound station, keeping the place together. A station pops up in the
vibrant "centre". *So easy to do. *So easy to spread out.

So easy to flood.

You put drainage in ****wit. *Otherwise no tunnels would have been built.
Duh!

Duh! What happens when the power and/or the pumps fail, yoiu fool?

There's lots of places need to be continuously pumped as well as
tunnels.
Every single tunnel under a river is pumped
http://www.severnsideforum.co.uk/severn%20tunnel.htm