Last hope in hell

In front of a factory in Melbourne's far east, two ventilation fans at ground level turn slowly in the cool spring air. Below them is buried a bunker. Once its heavygauge stainless-steel door shuts, the only sources of light are the LEDs fixed to the ceiling. Not that there's much to look at. There aren't any cans of chickpeas, or bottles of water, or first-aid kits. It's not the sort of bunker you're supposed to stay in for long.