DisgrifiadA leat, some 1.6km long, was constructed in 1825 to provide water for the ornamental lake at Cyfarthfa Castle (nprn 18504) and, via Pont-y-cafnau (nprn 34860), for Cyfarthfa Ironworks (nprn 34078). The northern end of the watercourse is at a sluice on the River Taff opposite Gyrnos Quarry; it runs parallel to the earlier Gyrnos Tramroad (nprn 303701) and still supplies the lake at Cyfarthfa Castle.
B.A.Malaws, RCAHMW, 02 October 2007.
