Some of the proportions are off because I basically drew everything 'by eye' Map is half mirrored & flopped image of the same layout with some minor detailing differences between the two sides. Very strange to be an ad hoc (secret) Smugglers Den with Metro and Security Airlock connections built in. Bare rock walls are asking for major/catastrophic leaks (but possible if was ad hoc (cheaply) constucted - what does Fontaine care if some of his workers get killed once in a while ...) . . .