The ringfort at Grandy in north County Cork belongs to that unhappy category: a structure that endured for well over a thousand years only to be levelled around 1979, leaving behind a paper trail and a single aerial photograph as its primary legacy. A ringfort, or rath, is a roughly circular enclosure defined by an earthen bank and ditch, typically dating from the early medieval period and used as a farmstead or place of refuge. This one, with a diameter of approximately 32 metres, was a modest but complete example of the type.

The site has a curious cartographic history. On the 1842 Ordnance Survey six-inch map it appears as a roughly pentagonal enclosure planted with trees, sitting within the demesne of Castle Kevin, where ornamental planting had clearly softened or obscured its original form. By the time the 1905 and 1937 editions were surveyed, it was recorded more accurately as a circular area defined by a fosse, which is simply a ditch, with an outer bank that had been absorbed into the surrounding field boundary system. A fosse-and-bank enclosure of this kind is described as univallate, meaning it had a single line of defensive or enclosing earthworks rather than the multiple concentric rings sometimes seen at more elaborate sites. An aerial photograph taken on 3 July 1975 still shows the enclosure standing, its shape legible from above even as the fields around it had long since swallowed its outer edges. Sometime in the following four years, it was gone.

Access was refused when the site was being documented, and local information confirmed the levelling had taken place. There is, practically speaking, nothing left to visit. What remains is the photograph, the successive maps, and the quiet fact that what once organised a patch of north Cork farmland for an early medieval family was tidied away within living memory.