Quote Originally Posted by sue_wilson View Post
IIRC I heard that when they were redoing the St James railway station they accidentally tunnelled through into a cavern that did not appear on any maps but turned out to be an under ground submarine pen used by the Royal Navy during ww2.

The accident lead to the station being closed for some time and plans for its expansion being abandoned (given that the military were not keen at sharing their secret bas with thousands of commuters)
I assume you mean James St. And also the loop line in the 1970s.

I find this undergound sub base rather far fetched. Built in WW2? And no one noticed? Mmmmm