Remember that Moorgate has been rebuilt twice, thus old passages are to be
found in places that seem odd in relation to the station of today. Someone
somewhere must have a map that makes sense of it all, any effort on my part
to either draw or explain the layout would probably be hopelessly inaccurate
or confuse further.

However:

The exits from both Northern and Northern City lines were at the southern
end of both sets of platforms and access to them still exists, not
necessarily directly from the platforms themselves.

The former Northern line passageways lead to 1) the lifts, 2) circular
emergency stairs (of same type as those that still in use from Northern
Line/Northern City line/ticket office), and 3) *possibly* a lift-avoiding
passageway to connect with the Met line passageway without having to go
through the lifts. The emergency stairs still lead up to the surface (not
known whether blocked off or not). Halfway up, a passageway leads a few
yards toward the Met line before it is blocked off.

The Northern City passageways are used for ventilation, hence the enormous
fan seen in one of the photos, and still lead to the Met line platforms. The
condition of them is not good, they have very narrow staircases, and they
start/finish in such awkward places that it is doubtful they would serve
much purpose if reopened, presumably why they weren't considered worth
keeping open when the station was redesigned.

Just to add more to this is the old (non-Met) ticket office (not featured on
the site), which still exists somewhere, east, I think, of the existing main
hall at sub-surface level.

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In article
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lonelytraveller wrote:




on http://www.abandonedstations.org.uk/...e_station.html, there
are pictures of several abandoned corridoors and passages at moorgate
which connect to the northern city line platforms. But every time I
try to piece them together, there always seems to be an important
missing detail - there are no doorways, blocked or otherwise, which
seem to actually join the northern city platforms. So what I wanted to
know was how you would have originally got into these passages from
the platforms - was there an exit at the platform headwall? and how
would it relate to the photographs (ie. where does it join up)?

another strange moorgate feature on that site is that there was a
corridoor on the "other side of the lifts" for the northern line
heading in the opposite direction, towards "the Metropolitan". Can it
really be the case that if you were going from the northern line to
the metropolitan you were supposed to wait for a lift to turn up and
then just walk through it?

The northern city line also has a long passage to the metropolitan
line. So there are two long twisty passages to the metropolitan line
from the northern and northern city lines, but neither passage is in
use. As these seem to have been at least two floors below the
metropolitan line, then presumably there must have been some sort of
stairs to bring them up to the right level; so, since they wouldn't
need lifts, is there any reason they can't bring these back into use
as they would be much needed congestion relief?

Do they perhaps come out in really awkward places on the metropolitan
line platforms? If not, could they be turned into disabled access to
the northern/northern city platforms?