Somewhere beneath the farmland outside Kilkea in County Kildare, the outlines of an ancient field system survive, invisible at ground level but legible from the air as cropmarks, the faint differential growth of crops over buried features that betrays what lies beneath. The pattern shows up on aerial photographs as a small but coherent arrangement of fields, the kind of low-key agricultural ghost that tends to be overlooked in favour of more dramatic monuments.

The system appears to be connected with two other significant but now-vanished features nearby: a church and a children's burial ground, the latter being what was historically known in Ireland as a cillín, an unconsecrated plot used for the interment of unbaptised infants and others excluded from formal churchyard burial. Both were documented by Fitzgerald in the early twentieth century, with references placing them in this general area. The field system does not stand alone in the landscape either; two further small field systems and a circular enclosure have been identified in the immediate vicinity, suggesting that this corner of Kildare once supported a cluster of activity, perhaps centred on an early ecclesiastical site. The cropmarks were first recorded on an aerial photograph designated CUCAP AVM 7, and were confirmed again on a later photograph taken in 1989, meaning the buried remains have remained stable and detectable across several decades.

Cropmark sites of this kind are genuinely difficult to appreciate from the ground, where there is often nothing visible whatsoever. The best views have always come from aircraft, or more recently from drone photography and satellite imagery, which occasionally allow the full geometry of these buried landscapes to resolve into something recognisable. The connection with a possible ecclesiastical enclosure and burial ground gives this particular cluster an added layer of interest, hinting at a small early Christian community that has left almost no trace above the surface of the fields.