This is a cashel, a type of ringfort built from stone rather than earthen banks and ditches, and what makes it quietly odd is not just its current state of collapse but the gap between what it once was and what survives. When the antiquary Thomas Johnson Westropp visited and recorded it in 1911, he found a coarsely built fort with a terraced internal wall, a recessed platform, and a flight of steps rising from that terrace. He also found a lintelled gateway at the eastern side, already recently overthrown by his time, though enough remained for him to produce a plan and elevation of the entrance passage. A century or so later, the steps had vanished entirely from view, and the gateway survives only as two fallen lintels lying in the rubble of the passageway.

The cashel is subcircular in shape, measuring roughly 33.5 metres across its longest axis, northeast to southwest. What was once a substantial stone wall, up to 2.4 metres high on the exterior and about 2 metres thick, has largely collapsed outward into a broad spread of loose stone some 6 metres wide. That spread is thought to represent the level of the original internal terrace, a ledge running around the inside of the wall that would have given the structure something of a stepped, tiered interior. The outer face of the wall still holds its line for much of the circuit, rising up to 0.8 metres above the stone spread, and the original construction is best preserved on the northern arc. A later drystone field wall has been built across the top of it between the northwest and northeast. The site appears on the Ordnance Survey six-inch maps of both 1842 and 1920, marked with hachures indicating an earthwork or enclosure. Perhaps most striking is its company: two further cashels lie within 150 metres, one to the northeast and one to the south-southwest, suggesting this corner of the plateau was once considerably more occupied than its current character of hazel wood and rough pasture would imply.