Built as a cashel, the Irish term for a ringfort defined by a drystone wall rather than an earthen bank, it has held its shape across centuries of agricultural use and weather, its double-faced wall still legible in the landscape.

The structure is subcircular, measuring roughly 31 metres in diameter, and its wall construction is worth pausing over. A double-faced drystone wall means two outer skins of carefully laid stone with a rubble core between them, a technique that gives considerable mass and stability without mortar. The cashel sits on a gentle rise in pastureland, which would have offered its original occupants modest but useful elevation, enough to see and be seen across the surrounding ground. A gap of just over three metres on the south-south-west side may mark an original entrance, though it is thought more likely to be a modern intrusion into the fabric of the wall. A field boundary, one of the countless low stone divisions that parcels up the Connacht landscape, curves around the monument from the south-west to the north-west, suggesting the cashel has been incorporated into working farmland for a very long time, acknowledged rather than removed.