[rlweb]

Belsize Park has a deep shelter which is connected to the station but has been used as a storage facility for a while.

Semi-accessible currently and is known within the urbex community

https://www.28dayslater.co.uk/threads/belsize-park-deep-leve...

[implements]

There’s a few tours of the deep level facilities on YouTube now - fascinating from a Cold War civil defence perspective (things you thought you’d never see, even second hand):

https://www.youtube.com/watch?v=PZDs9pgO8VQ