A ring-ditch, the term used for a circular ditched feature commonly associated with prehistoric funerary or ritual activity, leaves no upstanding stonework and no obvious surface trace. What revealed this one was not excavation but a single aerial photograph taken in July 1989, in which the buried ditches showed up as cropmarks, the subtle but readable discolouration that appears in growing crops or parched grass when soil conditions above underground features differ from those around them. The image captured two widely spaced concentric fosses, the inner one measuring roughly fifteen metres in diameter, with what appears to be an entrance gap through both ditches on the eastern side.

The site sits within a field that holds more than one layer of the past. Around sixty metres to the south lies a separate circular enclosure, a distinct feature of its own. Running adjacent is a relict field system, the faint corrugated remains of boundaries and plots that once organised this land under a now-vanished agricultural arrangement. The cluster suggests that this part of Carrigleagh was not incidentally occupied but was, at some point, a meaningful piece of a broader settled or ceremonial landscape. None of these features announce themselves at ground level; they are legible only at altitude, which is part of what makes the aerial record so valuable for understanding the Irish countryside.