The site, known locally as An Dúinín, a name meaning something like "the little fort", is not defended by dramatic ramparts or deep ditches. Instead, its enclosures are slight, low-banked, and partly lost to the sea, which has already claimed one wall of a small D-shaped structure on the southern promontory.

Ballymore Point runs on a northeast to southwest axis and forms the eastern side of the entrance to Ventry Harbour. Against a bank at its southeastern end sits a rectangular hut-site measuring roughly 3 by 4.5 metres, enclosed by a bank no more than half a metre high. A later wall, accompanied by a shallow internal fosse, a trench cut just inside a defensive line, runs along the cliff edge and effectively isolates two smaller promontories to the southwest and south. On the westernmost edge of the southern of these sits the D-shaped enclosure, just 2.2 by 2 metres, its seaward side now gone. A larger hollow to the east of it appears to be the result of quarrying, possibly dug to provide stone for those later walls. It was Pádraig Ó Siochfhradha, writing under his pen name An Seabhac, who recorded the local placename An Dúinín in 1939, and it is that name, combined with the evidence of the hut-sites themselves, that supports the identification of the whole complex as a promontory fort. The archaeological survey of the Corca Dhuibhne region, published by Judith Cuppage in 1986, brought the site to wider attention.

The defences here are genuinely faint, and without knowing what to look for a visitor could walk the headland and read nothing at all in the ground. What rewards attention is the logic of the place: the way the walls work with the natural cliff edges, and how the quarry hollow fits so neatly into the story of how the enclosure was built and then extended.