56303 is just about to dive under the Oxford Woodstock Road roundabout, as it works the 6Z91 10:53 Calvert to Didcot Power Station flyash empties on 25 April 2013. I have never known the weather go from full sun to full cloud quite so quickly, and seemingly as soon as I got the car out of the garage! Abandoning my plan to go to Oddington, I opted instead for this viewpoint, which amazingly I don't think I have ever used before. I have often photographed trains a few yards further south, where they emerge from the very short Wolvercote Tunnel, that takes the line underneath the Oxford ring-road roundabout.