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[email protected] · August 9th 17, 12:42 AM posted to uk.transport.london

In article ,
() wrote:

On Tue, 8 Aug 2017 17:47:29 +0100, Basil Jet
wrote:

On 2017\08\08 11:54, Recliner wrote:

That's true of most Tube tunnel portals, as the initial shallow
section is cut and cover. The TBMs only do the deep tunneling.

I've just looked at numerous tube portals in Bing Maps using the 45
degree view. The pair of round portals are clearly visible in most. I
have found none which clearly match your description.

The Picaddilly tunnel where it goes down after Barons Court is just
visible on those maps and isn't round portals.

Only because there's a (fairly short) covered way before the tunnels start.

--
Colin Rosenstiel