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.

--
Colin Rosenstiel