A circular cropmark roughly seven metres in diameter has been recorded from aerial imagery, the kind of feature that passes entirely unnoticed at ground level but resolves into a clear ring shape when viewed from above. It belongs to a category of site known as a ring-ditch, a term that generally refers to a circular ditch, often the remains of a prehistoric funerary or ritual monument, whose original earthworks have long since been ploughed flat. What survives is not the structure itself but a trace of it, legible only because the soil disturbed by the ancient ditch retains moisture differently from the surrounding ground, causing the crops above it to grow at a slightly different rate and colour during dry spells.

The feature at Flacketstown was identified from a Google Earth orthoimage captured on 24 June 2018, and is also visible on Apple Maps. The record was compiled by Caimin O'Brien, based on details provided by Jean-Charles Caillère, and uploaded to the relevant database in November 2021. Beyond what the imagery itself reveals, very little is documented about this particular mark. Its diameter of approximately seven metres is modest but consistent with the scale of ring-ditches found elsewhere in Ireland, where such features have been associated with Bronze Age burial mounds whose above-ground material has been eroded or removed over centuries of agricultural use.

Because this is a cropmark site, there is nothing to see in the conventional sense. The mark appears in aerial photography taken during a dry summer period, when moisture stress in the soil is most pronounced, and would not necessarily be visible in imagery captured at other times of year. Anyone curious about the site would do best to examine it through the aerial layers available on Google Earth or Apple Maps rather than attempting a visit to the field itself, which is private farmland and presents nothing obvious at surface level. The interest here lies less in the place as somewhere to go and more in what it represents: the way that ancient disturbances to the earth continue to speak, faintly, to those who know where and when to look.