king_walnut
Member
- Joined
- 16 Oct 2013
- Messages
- 261
I think I'm right in saying that most underground lines have their outer stations above ground, and then they head into tunnels under the ground passing through central London. So my question is - during super heavy periods of rain, what stops all the water flowing down into the tunnels? Os it just a case of fantastic drainage before it can get that far?