so that is a photograph of billions of porcher. kind of different. but would you describe is the difference between the last porcher and this one? desolation in hearing. survival in hearing. monochromatic. it is a bit better with the lighting, but it is fairly monochromatic for a color image. what i'm trying to get at here is that bill manbo needlessly use the camera in ordinary ways, but there was clearly something else going on. he was at times documenting something on the bleakness, the isolation, the enormity of the surrounding the next version of surrounding and its unmistakable and an image like this with billy walking up the avenue past the piles of coal in the barracks. how about that image? what is this a picture of? [inaudible] >> guard tower. it's a guard tower. you could take in any number of photographs around the camp. it is impossible to read a photographers mind of course, but it's hard for me to believe he was not commenting on surveillance. that is the central image of this photograph. that's the focus of the guard tower in the hill