Roland Perry wrote:
In
Hampstead is on a steep hill and the station platforms are the deepest
on the London Underground network, at 58.5 metres (192 ft) below ground
level. It has the deepest lift shaft on the Underground at 55 metres
(180 ft) which houses high-speed lifts.
Source https://en.wikipedia.org/wiki/Hampstead_tube_station

Indeed, but if the earlier poster was having difficulty breathing due to
depth, it could be attributed to air pressure, which is a factor of
sea-level, not depth from the surface. However as the effect is less
than 1% at such depths, perhaps it's claustrophobia or air pollution
that's really the issue. In which case the tube lines are more prone to
those than the DLR.

But I wonder what it is peculiar to the Piccadilly that affects Basil in
that way ?
He says it is the deepness of it but it isn’t really that different from
the other London tube Lines (using tube in the old way to describe the
smaller loading gauge routes).
Perhaps it is the only one he uses , or enters by one of the few remaining
lifts entries which seem to emphasise
a trip towards the underworld.
Basil,have you ever taken a journey on the Glasgow Subway?
If you have did you find that claustrophobic at all with it loading gauge
even smaller than London tubes.


GH