There's some fantastic, seriously overgrown p.way huts on the main line in Cornwall. Mainly sleeper built or corrugated steel but with mature trees and ivy in and all over them...marvellous. I fancy photographing them all as a retirement project, but short of there being a national train strike I don't know how I'd get near them!
Any other lines with interesting, forgotten structures?
For years after the Lickey bankers shed was closed it was host to a whole forest of birch trees...seems to be a cleared site now. Er was that Bromsgrove shed btw?