On Thu, 3 Mar 2011, Paul Scott wrote:

"Tom Anderson" wrote in message
th.li...

Come to think of it, i have no idea how the tunnels relate underground. Are
they completely separate right up their portals?

You'll appreciate this I think Tom, found it this morning:

http://www.youtube.com/watch?v=KZxk08n8Jag

At about 1.03 you can see a connection from Finsbury Park coming in from the
right of the southbound tunnel. That approximates to the current 'up
Moorgate' route from Finsbury Park - the flyover shown above has since been
rebuilt, but that is carrying the down line from Canonbury over the 'tubes'.
The LU tunnel portals were demolished and a new down Moorgate route formed
roughly where they were, passing under the down Canonbury.

That does illustrate things quite clearly, thanks!

tom

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