What makes it worth pausing over is a small engineering decision embedded in its construction: the interior has been deliberately raised on its south-west side to level the floor against the natural incline of the hill. Someone, at some point in the early medieval period, did not simply place a fence on a slope and call it done.

This is a rath, the Irish term for a ringfort, a type of enclosed settlement that was the dominant form of rural habitation in Ireland from roughly the fifth to the twelfth centuries. Thousands survive across the country in varying states of preservation, defined by a circular bank and ditch enclosing a domestic space where a farming family would have kept their household and livestock safe from opportunistic raiding. The Cahermore example measures approximately 35 metres north to south and 39 metres east to west, making it a fairly typical example in scale. One detail slightly complicates the picture: a field boundary running east to west has cut into and truncated the southern edge of the enclosure, obscuring what would once have been a complete circuit. The bank that does survive gives a clear enough sense of the original form, a near-circle of compacted earth and stone that once defined a distinct social and domestic world.