Neath and Tennant Canals: Start of Tennant Canal, Carbon Black factory, Crymlyn Bog; Tennant Canal, Jersey Marine; Start of Neath Canal, Briton Ferry; Neath Canal, Giant's Grave; Neath Canal, Lock house and bridge, Tonna; Tennant Canal, Neath Abbey; Tennant Canal, Neath river bridge; Tennant Canal, aqueduct, Aberdulais; Tennant Canal, Aberdulais basin; Neath/Tennant Canal: joining point of 2 canals; Neath Canal, Ynysbwllog aqueduct; Neath Canal, lock chamber, Abergarwed. 1970s