When cartographers surveyed this part of north Tipperary in 1840 and committed it to the first edition Ordnance Survey six-inch map, they recorded the site as a rectangular enclosure, its northern edge running along or merging with the townland boundary. By the time surveyors returned for the 1901 to 1905 edition, the same site appeared as a circular enclosure, intact and clearly defined. Whether the earlier surveyors misread what they saw, or whether the ground itself was read differently by different eyes, the discrepancy is quietly puzzling and has never been fully resolved.

The enclosure sits just off the crest of a ridge, on a south-westerly facing slope, which is a position typical of many early Irish enclosures where outlook and drainage both mattered. It measures roughly 24.2 metres east to west, a modest ring that would once have been defined by a bank and an external fosse, the term for a ditch dug around a defended or enclosed space. What survives today is considerably reduced. The bank has been worn down to a height of just 0.52 metres, and the fosse, once perhaps more pronounced, is now around 6.5 metres wide and only 0.22 metres deep. The northern arc of the enclosure was cut through around 1920 when a road was constructed along the line of the old townland boundary, following almost exactly the edge that had complicated the first surveyors more than eighty years earlier. That road effectively erased the portion of the site that had always been ambiguous, leaving a truncated ring in the grass.