Troed-y-Rhiw Quarry I is a small 30m long quarry, still in use and cutting through an enclosure boundary in place by the time of a 1766 survey of the Crosswood (Trawsgoed) Estate, associated with the Vaughan family (later Earls of Lisburne) (National Library Wales (NLW): CW IV.9 volume II, map 4). It appears that the quarry had been cut by the time of the 1891 1st edition 6-inch Ordnance Survey map and was most likely opened to provide building material for the construction of the farm of Troed-y-rhiw (NPRN 405541), 250m to the south at some time between 1843 and 1891.

This feature was recorded by RCAHMW in 2006 as part of a wider study of the Troed y Rhiw area (NPRN 405578).

Louise Barker, RCAHMW, June 2007.