Running 45 minutes late, and consequently having lost its booked path along the main line, 66002 Lafarge Quorn is instead traversing the down relief line at Circourt Bridge, Denchworth on 14 January 2012 as it heads west with the Pathfinder Tours 'Abercot Generator' railtour, now running as the 1Z55 12:27 (in theory!) Appleford Sidings to Aberthaw Power Station. As it seemed to be a perfect winter's day, without a cloud in the sky, I hadn't been constantly looking around for clouds, as photographers usually do. I was therefore surprised to see a bank of clouds to the south as I walked back to the car. Within a few minutes this superb lighting had disappeared, albeit temporarily.