It is not dramatic in the conventional sense, reaching barely five centimetres at its highest point, but that near-disappearance into the ground is precisely what makes it worth attention. This is a relict field boundary, meaning it has long since ceased to function as an active division of land, left instead as a faint crease in the landscape where someone once decided that here, and not there, was where their ground ended.

The boundary was built from random field stones, the kind of unworked, opportunistic material that generations of Irish farmers cleared from the soil and pressed into service as walls, with no quarrying or shaping involved. Its slight turn near the northern end, angling to enclose a patch of drier ground on an otherwise rough mountain grazing, suggests a very practical logic at work. Whoever built it was making a distinction between ground that was useful and ground that was not, nudging livestock toward the better footing or keeping them off a particular area entirely. How old it is, the notes do not say, and that uncertainty is itself part of what makes it interesting; walls like this can belong to almost any period, their age absorbed into the hillside along with everything else.