It does not announce itself. The bank, rising to about 1.2 metres and faced with stone on its earthen core, is the kind of feature that a passing glance might mistake for a natural rise in the field. A shallow fosse, the ditch that once reinforced the enclosure's boundary, is still visible to the north and north-west, though the interior is now heavily overgrown.

This is a rath, one of thousands of ringforts scattered across Ireland, most of them dating to the early medieval period, roughly the fifth to the twelfth centuries. A rath is essentially a farmstead of that era, the enclosed homestead of a farming family of some local standing. The earthen bank, sometimes stone-faced as here, defined the boundary of the settlement and offered a degree of protection for livestock as much as for people. The fosse outside the bank was a standard feature, and its partial survival on the northern and north-western arc at Clooncugger hints at how the original enclosure was designed to work with the natural contours of the slope. The choice of a break in the hillside was deliberate; such positions offered drainage, a degree of shelter, and a clear view of the surrounding land.