Somewhere beneath a field in Newtowndonore, County Kildare, the outline of a circular enclosure lies invisible to anyone standing at ground level, yet perfectly legible from above. The site reveals itself only as a cropmark, a phenomenon that occurs when buried features such as ditches or banks affect how crops grow overhead, producing variations in colour and height that are invisible from the ground but show clearly in aerial photographs taken under the right conditions.

The enclosure, roughly 36 metres in diameter, was identified from Google Earth aerial imagery captured on 28th June 2018. At that scale, the circular form suggests a ringfort or similarly enclosed settlement, the kind of site that was in common use across Ireland from the early medieval period onwards and is found in great numbers throughout Leinster. Ringforts, known variously as raths or lios, were typically homestead enclosures defined by one or more earthen banks and ditches, and thousands of them survive across the Irish landscape in varying states of preservation. Here, no upstanding earthworks remain; what survives does so entirely underground, its existence announced only by the behaviour of crops growing above it during a dry summer.