Former Quarrymen's Barracks to north-west of Ty Mawr (east range)

The Former Quarrymen's Barracks, located to the north-west of Ty Mawr, is a Grade II listed building dating from the 19th century. The complex consists of two long rectangular single-storey ranges that are aligned north-south. The eastern range served as barracks, while the western range functioned as a cowhouse. These two ranges are linked by a dry slate boundary wall to the north, and another boundary wall along with a later, lower range to the south forms a courtyard.

The barracks are constructed from roughly coursed rubblestone, with remnants of plaster still visible. Some areas have been repaired or altered using squared slate slabs, and the building features a slate roof. There are six window openings with slate cills and lintels; some contain 19th-century windows, while others have 20th-century timber windows. The structure has three doorways: a boarded doorway in the center, a stable door to the right, and boarded double doors to the left of center, which is an insertion. There is an integral end stack to the left and a ridge stack well to the left of center, with a cobbled path in front. The section to the left of the ridge stack appears to be an extension, indicated by a straight joint.

The original layout of the barracks consists of four unequal bays that form single-room units, each equipped with a chimney and fireplace, although the two southern chimneys are now missing from the exterior. The building features bolted A-frame trusses with single purlins and lime torching, along with plastered walls and floors made of quarry tiles and slate.