Part of the plateway system connecting various ironstone and coal levels on the NE slope of Mynydd Aberd're with Cyfarthfa Ironworks.
(SO02920665-SO02790653).

1884 (OS 6-inch 1st Edn.): A branch from the main western line running SW to workings.

1905 (OS 6-inch 2nd Edn.): extant.