Part of the plateway system connecting various ironstone and coal levels on the NE slope of Mynydd Aberd're with Cyfarthfa Ironworks.
(SO02940524-SO03170508).

1884 (OS 6-inch 1st Edn.): A branch serving workings on the south side of upper Cwm-glo.

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

Form: Earthwork-linear