Hall Class 4-6-0 6946 'Heatherden Hall' climbs the final yards to Dainton Tunnel with the 11.20 Plymouth - Taunton servicxe, 7/8/61. Note the 'sighting' mirror visible above the first coach, this enabled the signalman to check tail lights of eastbound trains as they ran into the tunnel (in case the lights were obscured by steam or a passing westbound train). ©Hugh Ballantyne/Rail Photoprints