The larger of the pair stretches roughly sixty metres across, its boundary formed by low, tumbled stone walls that have collapsed over centuries into the hillside. What makes the site quietly puzzling is the uncertainty layered into it: the walls themselves may be prehistoric or medieval in origin, yet the ridge and furrow pattern preserved inside the enclosure, the raised parallel strips typical of post-medieval tillage, suggests the ground was still being worked long after whatever original purpose the walls once served had been forgotten or repurposed.

The site came to wider attention after it was identified through satellite imagery captured between 2011 and 2013 and subsequently reported to the National Monuments Service by Ros Ó Maoldúin. That kind of discovery, a landscape feature sitting in plain view on a mountainside yet only formally recorded in recent years, is not unusual in Ireland, where aerial and satellite survey has steadily added to the catalogue of known monuments. The enclosure at Killoghil joins a long list of sites whose function and date remain genuinely open questions, the stonework too disturbed and the historical record too thin to say with confidence whether this was a farmstead boundary, a cattle enclosure, or something older entirely.