The walls protrude only slightly above the peat surface, rising no more than sixty centimetres in places, and they meander across the hillside in a way that defies easy interpretation. There is no regular grid, no obvious orientation, no logic that matches how we tend to imagine organised farming. The walls curve gently and apparently at random, disappearing below the bog in one stretch and resurfacing further on, covering an area of roughly 400 metres east to west and 350 metres north to south.

What makes this landscape particularly arresting is how much activity it once contained. Within the field system there are four hut sites, an enclosure, and two features identified as possible fulachtaí fia. A fulacht fia is a type of prehistoric cooking site, typically consisting of a horseshoe-shaped mound of heat-shattered stone beside a trough, thought to have been used for boiling water by dropping fire-heated stones into it. They are found across Ireland in considerable numbers, but their appearance here, embedded within a working agricultural landscape on a mountain slope, suggests a community that was not simply passing through. The hut sites reinforce this: people lived and worked here, dividing the hillside into fields whose boundaries no longer follow any pattern we can readily decode.

The bog that now covers much of this site is, in an odd way, what has preserved it. Peat accumulation is slow and indifferent, and it has sealed these walls against the kind of disturbance that erases similar monuments elsewhere. Visiting the site means walking rough hill pasture at altitude, where the walls are subtle and easy to miss unless you are looking for slight linear rises in the ground. The wider Mangerton Mountain area is accessible from the Killarney side, though the field system itself sits in open upland terrain with no formal path leading to it.