What gives this rath its particular character is the combination of engineering and position: it sits at the highest point of the ridge, with clear sightlines in every direction, and its construction involved more than simply heaping up a bank. The interior of the platform actually dips toward the centre, which suggests the builders cut into the hillside itself, a technique known as scarping, to throw the excavated material outward and heighten the enclosing bank above the natural ground level.

The earthwork is a rath, the Irish term for the most common type of early medieval ringfort, typically a farmstead enclosed by one or more earthen banks and ditches. This example is more substantial than many. The raised circular platform reaches a maximum diameter of around 39 metres, and the bank running around its perimeter stands between one and a half and two and a half metres above the exterior ground. Beyond that bank lies a wide, deep fosse, essentially a substantial ditch, running to about six metres across and a metre and a half deep, with a further outer bank of its own beyond it. That outer bank has been absorbed into a field boundary fence along the northern side, one of those small signs of how older landscape features get quietly repurposed over the centuries rather than simply erased. The place-name Rathpatrick preserves the monument in plain sight; raths that gave their names to townlands often did so because they remained visible and prominent long after their original purpose was forgotten.