What was once a substantial circular cashel, a type of early medieval stone ringfort with drystone walls enclosing a defended farmstead, had been reduced to a gapped and overgrown wreck by 1900, and by 1914 its stones were being carted away and broken up for road metal. The site sits on the north-western slopes of a hill in County Clare, with open views stretching to the west-north-west and south-south-west, and there is something grimly fitting about a structure built for permanence being dismantled to surface the roads of a later age.

The antiquarian Thomas Johnson Westropp visited around 1900 and described the fort, which he called the caher of Craggagh, as already badly damaged by encroaching modern buildings, its walls gapped and obscured by vegetation. He returned or received word of further destruction in 1914. Despite this prolonged attrition, the footprint of the cashel remains legible: a wide stony bank, between 3.6 and 8 metres across, traces a circle with an internal diameter of roughly 41 metres, and where facing-stones survive at the east-north-east, they suggest the original wall was around 2.1 metres thick. No entrance is now discernible. At the centre of the enclosure sits a circular hut site, and to the south-west lies a souterrain, an underground stone-lined passage of the kind typically used in early medieval Ireland for storage or refuge. A curving bank of stone runs along the southern edge of the souterrain, and later field walls have subdivided the interior, compressing the archaeology of several different periods into one untidy palimpsest. Westropp also noted in 1900 a bohereen, a narrow rural lane, connecting the caher to Killonaghan church nearby, a route that appeared on the 1915 Ordnance Survey six-inch map but was absent from the earlier 1842 edition.

The fort sits at the south-western corner of a multiperiod field system covering an area of approximately eight square kilometres, one of those large, slow-accumulating landscapes that record centuries of agricultural reorganisation rather than any single moment of construction or abandonment. The cashel is part of that longer story, a fixed point around which the surrounding land was worked, divided, and reworked long after the original enclosure had begun its decline.