One of several massive concrete air vents jutting out from the building.
See where this picture was taken.
Tags: Thornhill AAOR nuclear bunker Cold War URBEX Cardiff Wales concrete derelict graffitti geo:lat=51.54418606720162 geo:lon=-3.222874626517296 geotagged Wenallt
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The Time Grabber following my lead..... He is learning so much. It makes me feel warm inside lol...
Tags: Wenallt Thornhill AAOR nuclear bunker Cold War URBEX Cardiff Wales concrete derelict graffitti
Aha!! A way in? But as the next shot reveals, no thanks!
Once down here, there would be no way back out.
Some cool graffiti at this site