In message , John Rowland
writes

If you click on "Down The Tubes" it leads to a map showing all the railway
and ex-railway tunnels in the area. There are two curves passing either side
of the Great Northern Hotel. The northern is the Hotel Curve - what's the
other?

The old link between the Midland and the Widened Lines:

http://www.londonrailways.net/snowhill.htm
--
Paul Terry