Part of the plateway system connecting various ironstone and coal levels on the NE slope of Mynydd Aberd're with Cyfarthfa Ironworks.
(SO02450615-SO02520639).

1884 (OS 6-inch 1st Edn.): A branch running northwards from Winch Mawr coal and ironstone pit - possibly for tipping of spoil.

1905 (OS 6-inch 2nd Edn.): Not shown.