© ellyBelly Publications
Leaning to the curve, English Electric Type 3 Class 37
number 6931 (37231, 37896) runs cautiously onto Knucklas Viaduct, over the Teme valley with the railtour from London, on the way to Llanelli and Barry Island. Once onto the viaduct full power needed to be applied to haul the train up from Knucklas station and on to Llangunllo. A photographic stop was laid on, further down the line, at Llandrindod Wells. The RCTS railtour (‘The Heart of Wales Rail Tour’) ran on 5th June 1971 from Kensington Olympia, returning to London Paddington.