The rath at Ballyroe in County Kerry is one such site, a circular enclosure of the kind that would once have served as a defended farmstead during the early medieval period, roughly between the fifth and twelfth centuries. Defined by one or more banks and ditches, a rath typically enclosed a family's dwelling houses, animal pens, and working areas, the raised earthen rampart offering both a physical boundary and a social signal of status and ownership.

Kerry is particularly dense with these monuments, its terrain preserving features that elsewhere were ploughed away or built over. Ballyroe, like many townlands in the county, carries its history in the ground rather than in documentary records, and the rath here represents a type of settlement that predates most written accounts of rural Irish life. The word rath itself is one of several Irish terms for these enclosures, the others including lios and dún, each carrying slightly different connotations of size or prestige, though in practice the terms were often used interchangeably. Without more detailed survey information it is not possible to say whether this particular example retains its banks intact, whether it has been incorporated into field boundaries, or what its present condition looks like from the ground.