Part of the plateway system connecting various ironstone and coal levels on the NE slope of Mynydd Aberd're with a transhipment point on the Cwm Pit Railway.
(SO02150624-SO01950631).
(SO01870636-SO01790635).

1905 (OS 6-inch 2nd Edn.): Two deviations on the branch to an ironstone level west of Ochr-y-mynydd, one of them by-passing the former reversing junction with the line from Winch Mawr, the other a slight alteration at the approach to the level.