What gives the site away, once you know what to look for, is the plan: a near-perfect circle nearly fifty metres across, still legible in the landscape despite centuries of agricultural use pressing in around it.

This is a rath, the most common type of ringfort found across Ireland, typically dating to the early medieval period, roughly the sixth to tenth centuries, though individual sites vary considerably. A rath consisted of a circular area enclosed by one or more earthen banks with accompanying ditches, known as fosses, and served primarily as a defended farmstead for a family of some local standing. The Glanycarney example follows the classic pattern: an inner bank, now reduced to just 0.2 metres in internal height, encircles the main area, with an external fosse reaching a depth of 2.2 metres at its deepest point. A second earthen bank, standing a more substantial 0.9 metres, lies 5.1 metres outside the inner one and survives to the north, though overgrowth obscures how far it originally extended. A gap two metres wide in the inner bank to the north-west, paired with a causeway crossing the fosse, marks where the original entrance once stood. Two-bank ringforts are somewhat less common than single-bank examples and may suggest the enclosure belonged to a household of higher status, or simply one with more reason to invest in additional defences. The site sits above a steep north-facing slope, a position that would have offered both a good outlook and natural protection on at least one side.