It is, in fact, a rath, the most common type of early medieval settlement monument in Ireland. A rath is essentially a circular enclosure defined by one or more earthen banks and an accompanying ditch, built to demarcate a farmstead and offer a degree of protection for livestock and family. This one is a respectable size, measuring roughly 61 metres north to south and 56 metres east to west, with a bank still standing around 1.5 metres high and an external fosse, the ditch dug alongside it, reaching about 2.2 metres deep in places.

The structure shows the typical arrangement you find across thousands of such sites throughout the country. A gap roughly 2.3 metres wide in the east side and a wider possible entrance of about 5.2 metres in the northeast suggest how people and animals would have moved in and out of the enclosure in daily life. The bank and fosse on the southwestern to northern arc have become heavily overgrown over time, which is common enough where a site has been absorbed into agricultural land without being actively cleared. The gently sloping, northeast-facing ground on which it sits is characteristic of rath placement; early farmers often chose slopes that offered reasonable drainage while keeping a view of the surrounding terrain. The site sits within the wider Ballinrobe district, in an area bordered by Lough Mask and Lough Carra, a landscape with a long and layered record of early settlement activity.