What you are looking at is a rath, 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. Tens of thousands of them survive across Ireland, though many are now so worn that only a careful eye or a low winter sun will reveal them at all. At Ardlaman, the enclosure measures approximately 27 metres north to south and 31 metres east to west, sitting on a gentle east-facing slope in an area of outcropping limestone.

The site was recorded by Denis Power and uploaded to the archaeological survey in August 2011. The scarped edge that defines the enclosure, essentially a cut into the slope that would once have supported a bank or wall, reaches a height of around 0.35 metres and a width of about three metres, and is best preserved along the arc running from the north-north-west around to the east-south-east. Along the south-east to south-west section, the original enclosing bank is harder to read; a dump of earth and stones roughly a metre high and stretching some 24 metres east to west now masks its line, the result of material being cleared from the surrounding fields over time and piled against the old boundary. Inside the enclosure, the western half of the interior drops away sharply towards the east before levelling out near the centre, a subtle but noticeable change underfoot. A field boundary that once skirted the western edge of the enclosure, and was still visible on the 1923 Ordnance Survey six-inch map, has since been removed.

The site sits in ordinary agricultural pasture, so access depends on the landowner and the state of the ground. The limestone geology of the area means the surface can be uneven and the grass thin in places, which actually helps when reading the earthwork, since the changes in level are easier to follow without dense vegetation obscuring them. The most legible portion of the scarped edge runs from the north-north-west around to the east, and standing anywhere along that arc gives the clearest sense of the enclosure's original oval outline. The interior slope, dropping east from the higher western ground, is worth taking a moment to notice; in a rath of this kind, such internal topography sometimes reflects how the space was once organised or built upon, even if nothing visible now remains above ground.