59206 John F. Yeoman Rail Pioneer waits in Challow loop on 10 October 2013 with the 7C54 13:06 Oxford Banbury Road to Westbury Mendip Rail stone empties. Luckily the driver stopped a little way back from the signal, in an ideal photographic position. Unfortunately though, it arrived in thick cloud, and departed in thick cloud. In fact, for the entire time it was sat there (over twenty minutes) it was totally cloudy, except for this ten second burst of fantastic sunshine, which dramatically highlights the black clouds. I know it was ten seconds, because I started taking pictures as it came out, and watched as the little patch of sun worked its way along the train. This was the optimum exposure, when the front of the train just became fully lit.