Viewed from the lofty vantage point of the Kennet & Avon Canal's Dundas Aqueduct, near Limpley Stoke, 50031 Hood & 50049 Defiance head north with the Pathfinder Tours 1Z50 06:26 Slough to Llandrindod Wells 'Heart of Wales Festival' railtour on 24 August 2002.