The outer bank rises to around 2.1 metres, the inner to 1.75 metres, with a fosse, or defensive ditch, running between them. The whole enclosure measures roughly 25 metres in diameter. To the north, there is a gap in the bank just wide enough to walk through, but someone at some point blocked it with stones, and now the interior is largely unreachable, swallowed by overgrowth.

This is a rath, the Irish term for a ringfort, the most common class of monument in the Irish countryside. These were typically enclosed farmsteads built during the early medieval period, roughly between the fifth and twelfth centuries, used by farming families as homesteads and for corralling livestock. What makes the Ballincurrig example quietly interesting is the detail preserved in successive Ordnance Survey maps. The 1842 six-inch map recorded it as a simple circular enclosure, rendered in the hachured style surveyors used to suggest raised earthworks. By 1905 and again in 1937, later editions had refined the depiction to show it as bivallate, meaning it had two concentric banks rather than one, a feature associated with higher-status or more defensively minded enclosures. Whether the earlier surveyors missed the outer bank or whether the landscape itself had obscured it is not recorded.

The site sits in working agricultural land, its banks holding their shape despite centuries of ploughing on the surrounding slopes. The blocked northern entrance is a small puzzle in itself; stones placed to close a gap that was presumably once the way in and out of daily life inside those banks. It is the kind of detail that tends to get lost in broader accounts of Irish archaeology, but it lodges in the mind once noticed.