In message , at 09:42:55 on Tue, 12 Jul
2005, Ed Lake remarked:
I'd read that the Circle Line is in the deepest tunnel, so I assumed
that the Circle Line passed UNDER the Picadilly Line at King's Cross.
If that's not true, let me know.

The Circle line is the *least* deep. And to all intents and purposes
it's a separate station, especially during the current building works in
the booking hall.

The bomb on the Picadilly Line exploded closest to King's Cross, which
probably means it was the last bomb placed on the trains.

More than "probably". Absolutely certainly - *if* they were all put on
board at KX just prior to those three trains making their final journey
through the station.
--
Roland Perry