Yet the site has not entirely disappeared. Captured in aerial photography as a cropmark, the ghost of its enclosing bank and outer fosse, a shallow defensive ditch ringing the outside of the earthwork, remain legible from above even when invisible at ground level.

A ringfort, or rath, was a type of enclosed farmstead typical of early medieval Ireland, roughly the fifth to twelfth centuries, consisting of a raised circular bank with one or more surrounding ditches. They were the homes of farming families rather than military fortifications, though the boundary they created served both practical and social purposes. The Grange example was recorded on the Ordnance Survey six-inch map of 1842 as a hachured circular enclosure of approximately twenty metres in diameter, modest even by the standards of the type. By the time aerial survey caught it as a cropmark, the physical structure had been levelled, most likely through repeated ploughing over generations. What makes the location particularly interesting is its proximity to two other circular enclosures, one roughly 170 metres to the west-southwest and another around 300 metres in the same direction. Clusters like this are not uncommon in Irish landscapes and may reflect kinship groups or successive occupation of a favourable area over centuries, though in this case the relationship between the three sites remains a matter of inference rather than documented record.