Re: Thames Tunnel
I was lucky enough to get on the "walk through the tunnels" trip they did when line was closed for extended engineering works. I suspect the last photograph in the article (of random people walking alone the lines) is actually from that event as I have a very similar one myself. I think they have done a pretty good job in the end with a reasonable balance between preservation, exhibition (albeit that you won't really see it from the trains) and waterproofing!
There is also a slightly nerdy thrill from walking along tracks through a tunnel and occasionally stepping on the live rail...
Biting the hand that feeds IT
