On a ridge above the pastures of Ardgallin in County Sligo, what survives of this possible rath is essentially a gentle earthen arc, the western half of what was once a roughly circular enclosure roughly sixty metres across. The eastern portion has been quarried away, leaving only a low raised bank, barely half a metre in height, curving across the hillside. Enough remains to read the shape, but not quite enough to feel certain about its original purpose or extent.

A rath is the Irish term for a ringfort, a type of enclosed farmstead built predominantly during the early medieval period, roughly between the fifth and twelfth centuries, though many were in use before and after that broad span. They were the everyday settlements of farming families across the island, defined by one or more circular earthen banks enclosing a central living area. This particular example was recorded on the six-inch Ordnance Survey map of 1914 as an embanked subcircular area, which suggests the enclosure was still reasonably legible at that point. The quarrying that removed the eastern section happened at some point after that, reducing a once-complete circuit to a partial one. Whether the stone or earth was taken for field boundaries, road-building, or some other local need, the effect was the same: a structure that had survived for centuries was reduced in the span of a generation or two.