The fields, boundaries, and enclosures that once organised this stretch of countryside left no obvious surface trace; what revealed them was the camera of an aerial survey, which caught the tell-tale cropmarks, those subtle variations in vegetation colour and growth rate that appear above buried features during dry conditions, photographed here in July 1989. The pattern that emerged from the images is a fragmented but legible one: a mix of rectilinear and curvilinear outlines, some running perpendicular to each other, with clearly rectangular field shapes among them.

What makes the Ballinaltig system particularly striking is not just its scale but the company it keeps. Sitting within or alongside the relict field system are at least three ringforts, a ringfort being the circular earthen or stone enclosure used as a farmstead across Ireland from roughly the early medieval period, as well as a further enclosure and a ring-ditch, the latter a circular ditched feature often associated with prehistoric burial or ceremonial activity. The presence of multiple ringforts suggests the landscape was actively farmed and settled over a long period, with the field boundaries perhaps predating, or running concurrently with, the construction of those enclosures. Whether the rectangular fields belong to the same broad period as the ringforts or represent an earlier or later phase of land use is not easily resolved from aerial evidence alone, but the density of features across the 45 hectares points to sustained and organised occupation of this ground.