Part of the plateway system connecting various ironstone and coal levels on the NE slope of Mynydd Aberd're with Cyfarthfa Ironworks.
(SO03150632-SO03320659).

1884 (OS 6-inch 1st Edn.): A branch running northwards from No.2 Pit to spoil heaps.

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