60010 Pumlumon / Plynlimon slowly approaches a red signal on the down loop at Pilning on 27 April 1991, as it prepares to enter the Severn Tunnel with the 6B08 12:25 Langley to Waterston empty oil tanks. Normally I would have been pleased to get a picture of what was then a brand new locomotive, but unfortunately it was about to get in the way of something much more interesting coming from the other direction!