On an east-west ridge at Kilmoylerane, a circular platform roughly 26 metres across sits slightly raised above the surrounding land, ringed by an earthen bank that still stands 2.2 metres high on its outer face. That difference in height, inside versus outside, is part of what makes a rath legible in the landscape: the bank was thrown up from a fosse, a shallow external ditch, creating a defensible enclosure that was home to a farming household, most likely in the early medieval period, somewhere between the fifth and twelfth centuries. The southern side of the bank has a deliberate gap three metres wide, the original entrance still intact after perhaps a thousand years.

What makes this particular site quietly interesting is what lies beneath it. In the northern half of the interior, a souterrain runs underground. A souterrain is an artificially constructed underground passage or chamber, typically built from stone and roofed with lintels, used for cool storage of dairy produce or as a place of refuge in times of threat. They are common enough companions to ringforts across Ireland, but their presence always implies a community with something worth protecting and the engineering know-how to conceal it. Inside the enclosure, the southwest quadrant also preserves a low, L-shaped bank, just 0.3 metres high and modest in extent, which may be the footprint of a structure that once stood against the interior face of the main earthwork.

The site sits in pasture, so the contours are visible rather than obscured by scrub, and the bank retains enough height to read clearly at ground level. The entrance gap to the south is the obvious place to orientate yourself, and from there the slight elevation of the platform, and the way the fosse curves around the exterior, become apparent underfoot rather than from any distance.