Furiey
No Longer Just Lurking
There are far more tunnels under London than are now used. Many are sections of old tunnels sometimes even with stations where trains used to run but no longer do. Some were made as part of the construction process for the railways, others are for other purposes all together. Most were mapped by the time the Jubilee line extension were built, but not all and there was always the worry that tunnelling would break into an unknown section of tunnel with the risk of collapse or exposing of long dormant diseases such as Anthrax. I remember some of the 3D models of the route and the complexity of the existiing networks and pipes was amazing.