That absence is, in its own quiet way, the most interesting thing about it. The site at Tully occupied the high southern end of a north-south ridge, the kind of elevated position that would have made it conspicuous in the landscape and useful to whoever built it, though by the time anyone thought to formally record it, it was already well on its way to disappearing.

When the site was visited and described in 1967, what remained was a roughly circular overgrown area of approximately 35 metres in diameter, defined on its eastern side by a low scarp, a slight but deliberate drop in the ground indicating the original edge of the enclosure. That eastern scarp measured around 0.6 metres wide and stood about a metre high, modest dimensions but enough to confirm that something had been built there with intent. A small outer drain ran along the same eastern side, and farm buildings stood just to the south. The form is consistent with a ringfort, a type of enclosed farmstead that was common across Ireland from the early medieval period roughly between the fifth and twelfth centuries, typically consisting of a circular area bounded by an earthen bank or a stone wall. At Tully, even those traces were not to last. Sometime between the 1967 description and 1995, the feature was removed entirely, likely as part of agricultural clearance.