A ringfort, one of the circular enclosed farmsteads that dot the Irish landscape in their tens of thousands, once occupied a slight rise at Carrownaglogh. By the time anyone thought to write it down properly, it was already disappearing; and after the inspection was carried out, it was levelled entirely.

When surveyors visited in 1995, the site had already been absorbed into the working landscape around it. A ringfort, in essence, is an enclosed area of ground, typically circular or oval, surrounded by an earthen bank or stone wall and dating broadly to the early medieval period, used as a farmstead or defended homestead. At Carrownaglogh, the oval interior measured roughly 27.7 metres north to south and 20 metres east to west. But the enclosing stone bank had been largely swallowed by centuries of agricultural activity. On the southern arc it survived as a low, sod-covered mound barely half a metre high; on the western side it was buried under a heap of field clearance stone, the kind of accumulated debris that generations of farmers threw aside when clearing ground for pasture. The northern arc had been replaced or overbuilt by a drystone field wall, and the eastern arc had been absorbed into a property boundary running roughly north-northeast to south-southwest. A narrow break in the wall on the north side may have been the original entrance, or simply erosion; it was impossible to say. In the years after that inspection, whatever remained was levelled. A second enclosure survives approximately 60 metres to the northwest, making Carrownaglogh a place where the archaeological landscape, though largely erased, was evidently once more substantial.