This quarry, now disused, was the source of the capping stones for many Taff Vale Railway bridges. Served by a siding from the Penarth line. Although not very durable, the attractive red sandstone breccia was much used locally as a domestic building stone (see for example the canal-side settlement of Llandaff Yard ST 153787). Other quarries for this stone were on the right bank of the river Ely at Leckwith and Cogan where they were also associated with clay pits and brickworks.
(A Guide to the Industrial Archaeology of South East Wales, AIA, 2003)
B.A.Malaws, RCAHMW, 12 August 2005.