The enclosure itself is roughly circular, about 42 metres in diameter, and survives in fair condition. It is defined by a scarp, the sharp edge of an earthen bank, and an intervening fosse, a defensive ditch cut to increase the effective height of any barrier above it, with traces of an outer bank still visible on the south-eastern side. A gap on the southern edge may be a modern breach rather than an original entrance. A cashel, the Irish term for a stone-walled enclosure typically associated with early medieval settlement or land management, seems to be what the place-name itself preserves. The castle recorded within the interior suggests the site was reused or reoccupied in the medieval period, a pattern not uncommon in Ireland, where earlier enclosures offered ready-made defensible ground for later builders. The knoll itself owes nothing to human hands; it is a product of glacial deposition, the kind of low rounded hill left behind as the ice sheets retreated thousands of years ago, and its slight elevation above the surrounding land would have made it a practical and visible location across successive generations.