What was once a subcircular enclosure, roughly 23 metres across at its widest north-to-south measurement, survives now only as a partial arc of grassed-over stone wall running from the south-west around to the north-north-west. The rest has effectively vanished into the working landscape around it.

Enclosures of this kind are a common enough feature of the Irish countryside, serving across different periods as boundaries for settlements, farmsteads, or ceremonial spaces, but the Cloonbar example is notable mainly for how thoroughly the land has reclaimed it. A field bank cuts directly across the monument at its northern side, a reminder that generations of farmers had practical business to attend to and little reason to preserve what may already have looked, to them, like nothing more than an irregular rise in the ground. To the east of that field bank, no surface trace of the original enclosure survives at all. What remains is essentially half a monument, sitting on a gentle rise, defined more by absence than by presence.