Do not enter

Next week is our last week at work in this building, so I thought I'd take another shot of it for posterity. This is the sign above the old 'room' (more of a cupboard) that used to be used as the dark room in the days when teaching slides were made from pictures in books. That all ground to a halt many years ago, and in fact, we got rid of the slide collection last year - the university don't provide projectors any more and most people use Google to find the images they want. The passing of another era.