"lonelytraveller" wrote in
message ups.com...
If the northern line runs under pentonville road, why/how do the
platforms have ex-lift shafts between them that you can see glimpses of
natural light, and air from? These can't surely be under the road -
there aren't any obvious large round holes in the road leading to the
platforms.

As Clive has said, the line follow Pentonville Road to east of King's Cross.
It then runs beneath part of King's Cross main-line station, with the
Northern Line platforms being beneath the construction site which currently
lies on the corner of Euston Road and Pancras Road. The big blue structure
in the middle of this site is above one of the former lift shafts.