"TheOneKEA" wrote in message
ups.com...
Brimstone wrote:
Euston Loop? Can you tell us more about this?

Back in the days when the Bank branch platforms of the Northern Line at
Euston were either face of an island platform (like Clapham Common),
there was a scissors crossover south of the platforms to allow C&SLR
trains to reverse south to Kennington and Clapham. When the C&SLR was
connected to the CCE&HR at Camden Town and the Charing Cross/Bank
branches formed, the scissors geometry was simplified to a single
trailing crossover. Later, a link was installed between the NB tunnel
and the Piccadilly Line; this is the Kings Cross Loop, and is the only
track connection (out of two planned*) between the Northern and the
rest of the LU combine.

Interesting explanation snipped

So it's not a loop as in the case of Kennington or Heathrow loops merely a
connection to the Piccadilly with a reversing facility?