The field system is invisible at surface level, leaving no ridge, furrow, or earthwork that a visitor could point to. Its existence is known only because of what a camera, pointed downward from an aircraft, recorded in a single summer.\n\nIn 1996, an aerial photograph revealed a pattern of cropmarks across the field. Cropmarks form when buried features, such as ditches, walls, or banks, affect how the plants above them grow. Soil over a filled ditch holds more moisture and nutrients, encouraging lusher growth; soil above a buried wall drains faster, stunting it. From the air, these subtle differences in crop colour and height resolve into outlines that speak to what lies below. What emerged at Lurgoe suggests a field system, a network of boundaries dividing land for agricultural or pastoral use, alongside what may be a separate enclosure. The slight elevation of the site, with clear sightlines in all directions, is consistent with deliberate settlement or land management in earlier centuries, though the record does not assign a definitive date or period to what lies beneath.