Need your help - What is this?

[dwarfer09]

Hi, My question is about the last image I have uploaded here.

I live near an abandoned nuclear bunker, there is a big old house near the underground bunker, there are many air vents sticking out of the ground in the gardens around the site where I presume the bunker lies.

I came across a weird round wall with vegitation and plants enclosed inside the round wall with steel mesh raised upon on top of the wall, attached to this wall there was a small shed compartment (see last pic).

I went home and examined the picture, I've been looking all over google trying to figure out what them pipes are, water or air? There are power switch boxes on the left on the pic, whether or not this is part of the device or not i dont know

I hope someone can let me know what this is as I have gotten myself into an irristible mystery that I must solve with your help.

Thank you, I hope someone can let me know what these are.

ps, sorry for my bad spelling

 

[Mike Jackson]

Contact this lot.

Subterranea Britannica: Cold War

They may be able to help.

Mike