This large WW2 air raid shelter in Port Glasgow was built for the workers of the large ropeworks nearby, in record time by a gang of Polish builders. Apparently there were five original entrances, from different parts of the factory. Apart from some junk, and a small fire in one entrance, it’s untouched internally – but time and rot has taken it’s toll. There’s still a lot of detail, though – canvas doors and toilet screens, cabling and pipework, remnants of benches – and, at one end, the air conditioning and generating plant.