In a field in Richardstown, County Kildare, there is something that cannot be seen from the road, or from the ground at all. A circular mark, roughly nine metres across, reveals itself only from above, and only under the right conditions. It is what archaeologists call a cropmark, a ghostly signature left in growing vegetation when buried features beneath the soil cause crops or grasses above them to grow at slightly different rates, typically drying out or ripening faster over the compacted edges of a filled ditch than over the undisturbed earth nearby. From altitude, these differences in colour and height resolve into shapes, and the shape here is a familiar one in the Irish landscape: a roughly circular enclosure, most likely the remains of a barrow, a prehistoric burial mound.

The site came to light not through excavation or field survey but through aerial photography, specifically imagery captured by Google Earth on 28 June 2018. The detail was identified by Edward O'Riordan and subsequently compiled by Caimin O'Brien. Barrows of this kind, small circular earthworks enclosing a burial at their centre, were constructed across Ireland during the Bronze Age, though without excavation it is impossible to say with certainty what period this particular example belongs to, or what, if anything, remains beneath the surface. At nine metres in diameter it sits at the modest end of the scale for such monuments. Centuries of ploughing have likely reduced whatever mound once existed to nothing visible above ground, leaving only the buried ring of its enclosing ditch to speak through the soil.