I visited an old Royal Observer Corps Cold War bunker
a while ago. These things are dotted all over the British countryside, but a lot of them are either flooded or sealed off. Anyway, I managed to locate one that was in relatively good condition and easily accessible, and took some pictures on the way:
Bunker from the outside, bike for scale:
Hatch after opening:
Obligatory up-the-hatch shot:
Label on crate:
MOD drawing showing the standard layout:
I also took a video of the hatch closing because I was impressed at how smooth the counterweight mech was - I'm assuming it's either been well maintained or has been refurbished/replaced. Be warned, it's windy as fuck and it looks like Michael Fox was the cameraman.
It was a lot smaller than I had imagined, it must have been very claustrophobic with two men and a shit load of equipment in.