These enclosures, known variously as raths or ringforts, were the farmsteads of early Christian Ireland, typically dating from roughly the fifth to the twelfth centuries. A raised earthen bank, sometimes reinforced with a ditch, defined the boundary of a family's living space, protecting livestock and household from wolves and neighbouring disputes rather than from any organised military threat. Thousands survive across Ireland in varying states of preservation, and Kerry has more than its share.

The townland name Cangullia is itself worth a moment's pause. Townlands are among the oldest territorial divisions in Ireland, many of them rooted in Gaelic land organisation that predates the Norman arrival, and their names frequently preserve fragments of older landscape description or personal association long since lost to everyday use. Beyond its location in Kerry and its classification as a rath, the specific history of this particular enclosure remains undocumented in what is currently publicly available. Whether it survives as a well-defined earthwork or as a barely perceptible rise in a field is, for now, an open question.