This one offers nothing of the sort. Somewhere beneath the ground of a working farmyard in Castlefarm, County Kerry, lies what may be a rath, an early medieval ringfort typically formed by one or more circular earthen banks enclosing a domestic settlement. No bank, no ditch, no surface trace of any kind remains visible. The only evidence that anything lies there at all comes from a cartographer's line drawn more than a century ago.

The 1897 Ordnance Survey six-inch map records a circular enclosure roughly twenty metres in diameter at this location. That modest diameter places it at the smaller end of the ringfort scale, perhaps the homestead of a single farming family in early medieval Ireland, when such enclosures were the standard form of rural settlement across the country. At some point between that survey and the present, whatever earthworks once existed were levelled, most likely through agricultural activity, leaving the site to survive, if it survives at all, only as a cropmark or subsurface anomaly. The qualifier "possible" attached to its identification is honest: without excavation or geophysical survey, the circular feature on the old map is suggestive rather than confirmed.

The farmyard setting means there is nothing for a visitor to observe at ground level, and the site is on private working land. What makes it worth knowing about is precisely that absence: a reminder that the Irish landscape holds a great many places where the archaeology is invisible not because nothing happened there, but because the record has been quietly erased, and only an old map remembers.