This one, in a pasture field in Mitchelstowndown North, Co. Limerick, offers nothing of the sort. There is no visible mound, no ditch, no surface feature of any kind. What exists here is essentially an absence, a circular mark that appeared briefly in a set of aerial photographs and has since been swallowed back into the grass. A barrow, in general terms, is a prehistoric burial mound, often circular in plan, raised over the remains of the dead and sometimes surrounded by a ditch. They survive across Ireland in various states of preservation, but many have been levelled over centuries of ploughing and grazing until only their ghost remains in the soil.

The site came to light not through any dedicated archaeological survey but as a by-product of infrastructure work. On 3 November 1984, aerial photographs were taken at a scale of 1:5000 as part of the Bórd Gáis Éireann Curraleigh West-Limerick gas pipeline project, reference BGE 1/5000 2573. On those images, a small circular feature was visible in the field, sitting roughly 220 metres east of the townland boundary with Island Dromagh. It had never been recorded on Ordnance Survey Ireland historic maps, and when later orthoimages were examined, including Digital Globe imagery from 2011 to 2013 and Google Earth photographs, there was nothing left to see. The feature had vanished, or more precisely, the conditions that made it legible from the air in 1984 were gone. Approximately 45 metres to the south-west, a second possible barrow, recorded separately under the reference LI048-024, suggests this corner of Limerick may have once held more funerary significance than its current appearance implies.

For anyone determined to visit, the site lies in ordinary farmland and there is nothing on the ground to orient yourself by. Cropmarks and soilmarks, the slight variations in vegetation growth or soil colour that reveal buried features in aerial photographs, depend heavily on weather conditions, soil type, and the time of year, tending to appear during dry summers when shallow-rooted crops or grasses above a buried feature are stressed first. The 1984 photographs caught something that subsequent surveys did not. Access to working farmland requires the landowner's permission, and even with that granted, a visitor would be standing in a field looking at grass, guided only by a grid reference and the knowledge that something circular once registered from the air above this otherwise unremarkable patch of County Limerick.