Earthwork complex situated to the east of Esgair Mwyn lead mine. The complex is visible on modern aerial photographic coverage and historic (circa 1900) Ordnance Survey mapping. It is comprised of a suspected rectilinear farm building, divided internally into three or four sections. The building is surrounded by earthwork banks forming larger enclosures. Historic Ornance Survey mapping depicts two footpaths leading from the building. The first runs in a northerly direction to Blaen Marchnant. The second runs west towards Esgair Ddu.

Sources include:
National Assembly of Wales, 2005, vertical AP
Ordnance Survey, circa 1900, second edition 25inch

N Vousden, RCAHMW, June 2012