The northern and eastern sides of the enclosure need no built boundary at all, being defined instead by a cliff face dropping to the lough below. Only on the western and southern sides did someone feel the need to raise a bank of earth and stone, and even that has slumped and eroded into something that takes a patient eye to read.

The enclosure measures roughly 20.6 metres long by 17.5 metres wide, modest in scale and rectangular in plan, which places it outside the more familiar tradition of circular ringforts so common across the Irish countryside. Rectangular enclosures of this kind can be harder to date with confidence, and this one has not yielded the kind of finds that would settle the question. What is perhaps more intriguing is a second structure abutting the outer face of the western and southern bank on its eastern side: a grassed-over rectangular arrangement of stone, around 7 metres by 6.5 metres, which the nineteenth-century observer G. H. Kinahan, writing in 1871, interpreted as the possible remains of a house. Whether it predates the enclosure bank, was built against it, or belongs to an entirely different phase of use is not clear. The site is, in the language of archaeology, poorly preserved, which is another way of saying that much of what it once was has been absorbed quietly back into the ground.