The structure is a cashel, the Irish term for a stone-walled enclosure, typically associated with early medieval settlement and sometimes used to protect a farmstead or the residence of a local family of some standing. What survives here is modest but legible: a wall with inner and outer facing-stones and a rubble core packed between them, running in an arc from south-southeast around through west to northeast. The interior measures roughly 21.5 metres across, and the wall itself, though reduced to a maximum height of about 0.6 metres, still retains a width of between 1.45 and 1.65 metres, suggesting it was once a reasonably substantial construction.

What makes the site quietly interesting is the evidence of domestic occupation within the enclosure itself. Pressed against the inner face of the cashel wall at the northern side is the base of a secondary stone wall, the remnant of a house site measuring at least 5 metres east to west and 3.3 metres north to south. This kind of arrangement, a small dwelling built up against the interior of an enclosing wall, is a recognisable pattern in Irish early historic and medieval settlement, where the enclosure provided both a practical boundary and a degree of shelter. Scattered fieldstones along the outer perimeter to the south-southwest and west may represent further structural remains, or simply the slow dispersal of walling material over centuries. The knoll setting would have offered both visibility and a degree of natural drainage, practical considerations that mattered as much as any symbolic ones.