The site is a rath, the Irish term for a ringfort, which was the most common form of rural settlement in early medieval Ireland, typically enclosing a farmstead and its associated structures within one or more earthen banks. This one, roughly 47.7 metres in diameter, is in fair condition, though not intact. The inner bank and its fosse, the ditch dug to provide material for the bank, have been lost along the southern arc from south-south-east through to south-west, and the outer bank has also disappeared along the north-east to east-south-east stretch.

What makes the Kilcreevanty rath quietly interesting, beyond its ridge-top position, is what sits inside it. The interior contains a clochán beag, a small stone hut or structure recorded separately as GA029-099001. These corbelled or dry-stone buildings are sometimes associated with early Christian activity and sometimes simply with the everyday needs of a farming household; their presence within a ringfort interior is not unheard of, but it does add another layer to what might otherwise appear to be a straightforward enclosure. A gap in the earthwork at south-south-east is modern in origin, though it may have coincided with or enlarged what was once the original entrance to the enclosure.