What makes the ruin at Clondulane quietly arresting is not just its scale, but one peculiar detail that has mostly vanished from the landscape: an aerial wire rope-way, a kind of overhead cable transport system, once carried grain from the mill across roughly 700 metres of countryside to a store at Clondulane Railway Station. The rope-way is gone now, the station no longer in use, but its trace survives on a 1935 Ordnance Survey map, a small diagram of an industrial logic that once linked river, mill, and railway into a single chain.

The mill was built by the Earl of Mountcashell, who constructed a dam across the Blackwater at a point known as Poul-Shane to feed the millrace, a channelled watercourse drawn from the river some 200 metres to the north-west. By 1837, when Samuel Lewis compiled his topographical dictionary of Ireland, the operation was being run by a Mr R. Briscoe of Fermoy, employed 30 people, and was turning out 20,000 bags of flour annually. That is a substantial output for a rural mill, and the building reflects it: the structure is multiphase, meaning it was extended or altered in successive stages over time, and it presents a double-gable end to the south. The window openings are stone-arched on the lower floors, with brick repairs visible higher up, where later interventions patched what time or damage had worn away. Inside, the building is now an empty shell, but alongside the northern wall a wheel-pit six metres in diameter survives beneath a wheel house, and within it sits an inward-flowing turbine, a design in which water enters the wheel from inside rather than striking it from above or below. Some of the original gearing remains in place, a rare survival in a structure otherwise stripped bare.