The structure is a cashel, a type of ringfort built from drystone walling rather than earthen banks, and this one measures roughly twenty metres across. Enough of the wall survives to trace an arc running from the north-west, through the north, and around to the south-east, though dense overgrowth has swallowed the rest of the circuit.

Ringforts of this kind were built in their thousands across Ireland, primarily during the early medieval period, roughly the fifth to the twelfth centuries, and served as enclosed farmsteads for families of some local standing. The cashel variant, where the enclosing element is a mortarless stone wall rather than a raised earthen bank, is particularly associated with the west of Ireland, where stone was the most readily available building material. This example in Kilcreevanty has not fared well against time and agriculture. A number of later field walls cut directly through the monument, a common fate for prehistoric and early medieval sites that happened to lie in the path of post-medieval land division. What was once a coherent enclosed space has been parcelled up, its boundary interrupted and partially robbed for the very walls that now bisect it.