It is one mile north of Aberllefenni in Gwynedd, Mid Wales, on the western side of Mynydd Llwydiarth.

During the early 1860s shareholder discontent lead to the dismissal of Rowlands, with the quarry now being run by the original owner Horatio Nelson Hughes.

Fortunes revived in the early 1890s, but towards the end of the century the accessible supplies of more profitable roofing slates at Ratgoed were running dry and the owners attempted to sell the business in 1897.

The advent of the First World War a year later again brought troubled times to the quarry and in 1918 only 6 men were employed.

Work continued at a reduced output through the 1930s and the years of the Second World War, but in 1946 the quarry finally shut for good.