Emerging from the southern end of Wickwar Tunnel in South Gloucestershire is GBRf Class 66 loco no. 66768. The train is 6V35, the Clitheroe Castle Cement (0843 hrs) to Avonmouth Hanson Sidings working, on the afternoon of Friday 17 July 2020. The train was fifty minutes up here, which was just as well as five minutes after its passing the light was gone.