In message id, Dr J R
Stockton writes

Query : there are three holes under the main line near Elm Road level
crossing. One is for Elm Road; one is used by trains from New Malden to
Norbiton. Why the third, parallel to and north of the second?

I can't immediately see where you mean. Can you give a location on ...

http://maps.google.co.uk/maps?f=q&hl...en,+Greater+Lo
ndon,+United+Kingdom&ie=UTF8&sll=53.098145,-2.443696&sspn=9.308633,20.434
57&z=19&ll=51.402432,-0.264294&spn=0.00118,0.003374&t=k&om=1

--
Paul Terry