It is a cashel, a type of ringfort defined by a stone or earth-and-stone enclosing bank rather than a simple earthen rampart, and this one has been left largely to its own devices, overgrown and easy to miss unless you are already looking for it.

Ringforts, which served as enclosed farmsteads during the early medieval period, are among the most common archaeological monuments in Ireland, yet each one occupies a particular patch of ground for reasons that made sense to whoever chose the spot. Here, the bank, measuring roughly 1.8 metres in width, traces a circular plan and is composed of earth and stone together. The position above Ballysadare Bay suggests the site commanded at least some awareness of the surrounding landscape, whether for practical reasons of outlook or simply because this was productive farming ground worth enclosing and defending.