What makes the spot quietly arresting is not the drama of a ruined building or a carved monument, but the blunt evidence of interrupted industry: stones shaped for a specific mechanical purpose, never delivered, or simply left behind when the work stopped.

The stones are made from conglomerate, a sedimentary rock composed of rounded pebbles and gravel bound together in a matrix, which could produce a suitably rough, hard-wearing grinding surface when dressed into a millstone. Local information, passed on by a J. Maume, suggests that several such stones exist in the area, pointing to a localised tradition of quarrying and shaping them on this hillside, roughly 1.5 kilometres east of a separately recorded millstone quarry. Millstones were not a minor item of local craft; they were essential to any working mill, and sourcing good stone close to where it was needed saved considerable effort in transport across difficult terrain. The fact that finished or partly finished stones remain in the landscape suggests production here either wound down gradually or simply ceased before all the stock could be moved on.