Part of the plateway system connecting various ironstone and coal levels on the NE slope of Mynydd Aberd're with Cyfarthfa Ironworks.
(SO01400709-SO01410719).

1884 (OS 6-inch 1st Edn.): A tramroad running N from an ironstone level to spoil heaps and connecting with the main western line.

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

Form: Earthwork-linear