What remains is a cashel, a type of ringfort built from drystone rather than earthen banks, its circular wall now reduced to foundations that trace a diameter of just over thirty-four metres across the hillside. The wall itself has long since lost its height, but the footprint it leaves is enough to suggest the scale of what once stood here.

Cashels of this kind are typically associated with early medieval Ireland, roughly the period between the fifth and twelfth centuries, when enclosed farmsteads of this form were a common feature of the landscape. They functioned as protected homesteads, the enclosing wall offering security for people, livestock, and stores. The drystone construction at Na Tuairíní, stones laid without mortar in a technique that relies entirely on careful placement and weight, was a practical response to the abundance of stone across much of Connacht. The site appears in Paul Gosling's Archaeological Inventory of County Galway, Vol. I, published in 1993, which describes it as poorly preserved and heavily overgrown, conditions that are likely to have deepened in the decades since that assessment was made.

The site sits on a north-facing slope, which tends to be the less favoured aspect for settlement given the reduced sunlight, though the precise reasons for its positioning here are not recorded. What the vegetation has gradually obscured, the underlying stonework quietly preserves.