At Gearha, a field system survives that appears to be directly associated with a nearby enclosure, its boundaries spreading out to the south and west in a pattern that suggests organised, deliberate land use rather than anything accidental or incidental.

Field systems like this one are among the more understated categories of archaeological monument in Ireland. Where a ringfort, a roughly circular earthwork enclosure used as a farmstead, draws the eye with its raised banks and ditches, a field boundary can seem like little more than a low stone wall or an earthen ridge threading through the grass. Yet the relationship between an enclosure and its surrounding field system is precisely what makes a site like this coherent: the fields and the settlement were part of the same working landscape, and the fact that this particular system extends in two directions from the enclosure suggests a farmstead with land actively managed around it. The survey of the Iveragh Peninsula compiled by A. O'Sullivan and J. Sheehan, published by Cork University Press in 1996, records this association, noting the field system under a separate monument reference while linking it spatially to the enclosure it appears to belong with.