Near Stacumny Cottage in County Kildare, something circular is hiding beneath a farmer's field. It cannot be seen from the road, and there is nothing to mark it on the ground. It only becomes legible from above, rendered in the language of cropmarks, where the buried outline of a roughly circular enclosure, approximately 37 metres across, shows itself in the differential growth of whatever crop or grass happens to be growing there.

Cropmarks form when buried features, walls, ditches, filled pits, affect how plants grow in the soil above them. Ditches retain moisture and produce lusher, taller growth; compacted foundations do the opposite. From ground level, the variation is invisible. From aerial photography, particularly during a dry summer when stress on vegetation is high, the pattern can emerge with remarkable clarity. It was precisely this kind of imagery, captured via Google Earth on 28 June 2018, that brought this enclosure to light. The roughly circular shape, at around 37 metres in diameter, is consistent in scale with a ringfort, the most common early medieval monument type in Ireland, typically a farmstead enclosed by an earthen bank and ditch. Whether that is what lies beneath the Kildare soil here remains unconfirmed; cropmarks suggest form but not function or date. The record was compiled by Caimin O'Brien, working from details provided by Jean-Charles Caillère, and added to the record in April 2019.

There is nothing for a visitor to see at ground level, which is in some ways the whole point. The enclosure exists, for now, as an aerial photograph and a set of coordinates, a shape discernible only when the conditions are right and someone happens to be looking.