Graeme Wall wrote:
On 15/11/2019 17:31, Roland Perry wrote:
In message , at 17:10:16 on Fri, 15 Nov
2019, Recliner remarked:

I find the Picc unbearably deep, so by the time I've reached Barons
Court (westbound) I'm standing by the door gasping for fresh air. No
other tunnel affects me like that, not even the Chunnel.

I thought the Northern Line Edgware Branch was deepest. I know when I
used to travel via Hampstead/Golders Green my ears used to pop.

That's the deepest under the surface, but the surface is a hill! Air
pressure on the surface there will be lower as a result, by about 2.5%

I think the deepest below sea level (from memory) is the Jubilee between
Westminster and Waterloo.

Later: Hampstead Station is approx 200m above sea level at the surface,
140m above sea level at the platform. Westminster and Waterloo Jubilee
Line platforms are between 25-26m below sea level.

What about the DLR at Bank?

Gets tangled up in whether it's a "tube" service or not.

Why would that be an issue?


Because Roland hadn’t thought of it and was trying to confine this thread
diversion to tube tunnels to disguise that, even though Basil had already
introduced non tube tunnels in his post by writing “ no other tunnel
affects me like that, not even the Chunnel”.

GH