What was once a complete circular enclosure roughly 45 metres across has been reduced, over the centuries, to a surviving bank on its western side, absorbed into the local field fence system as though the farmland simply swallowed it whole.

The site belongs to the category of monument known as a rath or ringfort, an enclosed circular area defined by one or more earthen banks and ditches, typically dating to the early medieval period in Ireland, roughly between the fifth and twelfth centuries. These enclosures served as farmsteads for individual families or higher-status households, and they are among the most numerous monument types in the Irish countryside, though the majority survive only partially. At Moskeagh, the external fosse, the ditch dug to throw up the bank material, has long since silted up, leaving only a subtle depression where it once provided a clear boundary. The earthen bank that does remain has been so thoroughly incorporated into later field divisions that its origins as a deliberate prehistoric and early historic construction are easy to overlook entirely.