Tidal mills, which used the rising and falling of the sea rather than a river current to drive their machinery, were a practical feature of many Irish coastlines, but they left a light footprint. This one, where Ballymadrough and Seapoint converge at the shoreline, has left almost none at all.

The evidence for the mill comes principally from Flanagan's 1984 survey, which places it precisely at the junction of the two townlands where they meet the water. A stream still runs inland from this point towards Lissenhall Great, and that watercourse would have been central to how a tidal mill functioned, typically by filling a millpond at high tide, then releasing the stored water through a sluice to power the wheel as the tide fell. What survives, though it has no direct connection to the mill itself, is a double-arched stone bridge crossing the stream, dated to around 1750. That date is suggestive, placing the bridge in a period when the local landscape was being organised and infrastructure built, but the mill as a structure has left no visible trace above ground.

The area sits in north County Dublin, and the stream and bridge offer the most tangible reason to visit. The bridge, modest in scale but well preserved, is the kind of detail that rewards a slow walk rather than a deliberate excursion. There is nothing to mark the mill's former location, no interpretation board or ruin, so arriving with Flanagan's description in mind is more useful than arriving without it. The pleasure here is largely in reading the landscape, standing at the margin of two townlands and imagining the machinery and labour that once made use of a tidal shoreline that now looks entirely unremarkable.