Very unusual lighting conditions at Challow on 25 September 2010. HSTs pass this spot with monotonous regularity, but they are not usually booked to move onto the normally freight only relief line. Therefore, despite the late hour, I wanted a picture of 43022 leading the Pathfinder Tours 1Z46 18:14 Bristol Temple Meads to Paddington 'Brunelian' railtour. Just before it was due the setting sun was shining straight into the lens with no possibility of a picture, but at the booked time the sun had actually set, leaving a pink glow in the sky. Luckily the train was on time, as there was only a few minutes of these conditions before the colours vanished and it became pitch black! Incidentally, although obviously this picture has required considerable work in Photoshop, the sky colour has not been enhanced at all, and the strange halo effect around the trees is not the result of some incredibly amateurship Photoshop work, but is purely the result of the lighting.