Taken deep in an abandoned manganese mine.
5x4 on a tripod. 4 photographers with large hand held flash guns, this shot required the cavern to be painted by 20 manual full power dischargese from each flashgun.
No-one else believed me and they closed their shutters far earlier, so no-one else got an image :-)
One person set of their flashgun while I was painting the rail tunnel on the right of the image with light.
So I re-touched myself out using Spotone :-) later.