This is a cashel, the stone-built equivalent of the more familiar earthen ringfort, and the example at Ganty is a notably well-preserved one. Roughly subcircular in plan, it measures just over 76 metres east to west and around 70 metres north to south, making it a substantial structure by any reckoning. A gap of about 2.6 metres on the west-south-west side may represent the original entrance, though caution is warranted with such inferences; openings in cashel walls can accumulate, shift, or be widened over centuries of agricultural use.

Associated with the enclosure are two features that hint at a more complex history beneath and around the walls. One is a souterrain, an underground stone-lined passage or chamber of a kind commonly found in early medieval Ireland, typically interpreted as storage space or a place of refuge. The other is a possible burial, a detail that, if confirmed, would place this site within a wider tradition of early settlement enclosures that also functioned as places of the dead. The site was noted by McCaffrey in 1952, and the drystone walling described then remains the defining characteristic of the place, uniform enough in construction to suggest it was raised deliberately and with some care rather than accumulated piecemeal.