The stones themselves are modest in scale, ranging from roughly half a metre to just over a metre in length and reaching no more than about ninety centimetres in height. What gives the site its particular character is the deliberate graduation of those heights: the stones diminish steadily from the entrance down to the axial stone at the far end, a design feature that appears repeatedly in Cork and Kerry stone circles and suggests careful, intentional planning rather than casual placement.

The circle spans approximately 7.5 metres along its main axis, which is oriented NNE-SSW, a alignment that may relate to solar or lunar events, as is common with prehistoric monument types of this kind across Munster. Recorded by the archaeologist Seán Ó Nualláin in 1984, the site conforms to what scholars call the Cork-Kerry multiple-stone circle tradition, a regional Bronze Age monument type characterised by an odd number of stones arranged in a recumbent or graded pattern. What sets Gort An Imill apart from many of its counterparts is the presence of a small quartz block placed just east of the main axis inside the circle. Quartz, with its reflective, almost luminous quality, turns up frequently at prehistoric ritual sites in Ireland, and here the block appears to have shed fragments over time, with loose quartz pieces scattered nearby suggesting it may have been struck or worked at some point.

The setting is itself part of the picture. Boggy upland ground in mid-Cork is not always easy to traverse, and the circle sits in a natural hollow that would have made it feel enclosed and set apart from the wider valley below. Visitors should expect wet ground and the absence of any formal infrastructure; the stones are low and can be easy to miss until you are almost upon them.