That quiet omission is itself a kind of clue. On a north-east-facing slope at the edge of the Wicklow Gap, a circular enclosure sits in the grass and bracken, its existence confirmed not by cartographers but by aerial photography. The enclosure is a cashel, the Irish term for a ringfort defined by a drystone wall rather than the more familiar earthen bank and ditch. This one measures roughly 34 metres north to south and 32 metres east to west, with its drystone perimeter wall surviving to a modest half-metre in height and running two to three metres in width. The north-east section of that wall is broken, and it is there that the original entrance may once have stood.

Ringforts, whether earthen or stone-built, are among the most common archaeological monument types in Ireland, typically associated with early medieval farming settlement, roughly the period between the fifth and twelfth centuries. A cashel of this kind would likely have enclosed a farmstead, its stone wall serving both as a boundary and as a degree of protection for livestock and family. What makes this particular example quietly notable is its invisibility on the cartographic record, despite sitting on open ground that overlooks the long north-south corridor of the Wicklow Gap. The headwaters of a stream run approximately 100 metres to the east, which is precisely the kind of practical, water-adjacent positioning that early farmers favoured. A second cashel lies about 170 metres to the west, suggesting this was not an isolated holding but part of a broader pattern of settlement along this stretch of slope.