In article , (Basil Jet)
wrote:

On 2015\03\18 00:41, wrote:
In article , (Basil
Jet) wrote:

On 2015\03\17 15:21, d wrote:
This is the first I've heard of this. Anyone else know anything
more about it?


http://www.ianvisits.co.uk/blog/2013...n-abandoned-tu
be-tunnel

It's hardly a secret. It's shown at


http://www.itoworld.com/map/26?lon=-...7&open_sidebar
=clickthrough_wrapper , and you can click on it for more info

That first article forgets that there was a platform on the loop, part
of Embankment station, from the opening of the loop. It's still in use.
A second Northern Line platform was added in 1926 when the Kennington
extension opened. The other map annotation doesn't distinguish between
the flooded and other sections.

The concrete plug in the tunnel was probably installed at the time of
Munich, when all the under-Thames tunnels were plugged. Later, flood
gates were installed in the tunnels still in railway use to allow
services to resume. Anyone know where the gate is in the southbound
running tunnel? I would expect it to be visible from the platform.

Are you suggesting that every railway under the Thames was shut
simultaneously for a while?

That's my understanding, yes. Detailed in chapter XIII, The Second World
War, pages 127-8, of "The story of London's Underground", by London
Transport, first published 1963, revised and enlarged to 1972 in my copy.

--
Colin Rosenstiel