Cutting and pit.

The quarry is characterized by a distinctive slot-like cutting beside a filled-in pit. An office building survives on site, made more exposed by the excavation of the 1863 smithy and carpenter’s shop, whose upper floor served as a barracks for workers. To the north lies a water-filled approach cutting leading to the lower-floor adit, which is located a considerable distance from the upper workings. The collapsed tunnel initially runs at right angles to the vein, implying a sharp curve or T-junction inside the working. Outside the adit, vestiges of a weighbridge remain. The former powder store has been completely lost.

The site was a small open quarry working that dates back to at least the 18th century. Located close to Rhyd Ddu station, it was already idle by the time the railway opened.