What makes it quietly odd is the contrast between its commanding position and its sodden interior: despite being elevated above the surrounding landscape, the ground enclosed within the monument is wet and marshy, a feature that has presumably persisted for centuries without discouraging either its builders or subsequent generations from treating the site as significant.

The monument is a ringfort, a type of enclosed farmstead built predominantly between the sixth and tenth centuries, typically consisting of a raised circular area defined by one or more earthen banks and ditches. At Raheen, the interior measures roughly 55 metres in diameter north to south, and it is defined by a scarp rather than a conventional bank. Outside this, a broad waterlogged fosse, or ditch, runs around the perimeter, measuring between 3.5 and 4 metres wide. Beyond the fosse sits a narrower outer bank, about 1.1 metres high and 1.8 metres wide, whose composition closely resembles the field boundaries nearby, suggesting it is a relatively modern addition rather than part of the original construction. There are two entrances: a causewayed opening at the south, 1.7 metres wide, and a wider possible entrance to the east at 4.65 metres, where the fosse gives way to a raised triangular area. An additional detail of later occupation appears on the south-south-west face, where a lime kiln, a structure used to burn limestone and produce agricultural lime, was built into the base of the monument's outer edge. Its presence is recorded on the 25-inch Ordnance Survey map, placing its construction in the nineteenth century at the latest. The ringfort does not sit in isolation either; a related enclosure lies 140 metres to the east and another ringfort 500 metres to the west-south-west, suggesting this hilltop formed part of a broader pattern of early medieval settlement across the area.