This one is classed as a rath, the Irish term for a ringfort, which was the standard form of rural settlement during the early medieval period, roughly between the fifth and twelfth centuries. A rath typically consists of one or more earthen banks and ditches thrown up around a farmstead, home to a family of some local standing, their livestock, and their outbuildings. The banks were a statement of status as much as a practical barrier.

Fybagh lies in Kerry, a county with an exceptionally dense concentration of these monuments, reflecting both the relatively undisturbed nature of much of its land and the intensity of early medieval farming communities across the province of Munster. Ringforts in this part of Ireland were sometimes built on elevated ground to take advantage of drainage and visibility, and many survive as raised platforms or low circular ridges where the original banks have been ploughed down or eroded over centuries. The site at Fybagh belongs to this long tradition of enclosed settlement, though the specific details of its construction, its dimensions, and its condition on the ground remain to be fully documented in the public record.