Where an ancient bank once completed the enclosure, a modern stone field fence now does the job, absorbed so thoroughly into the working agricultural landscape that the boundary between prehistoric monument and everyday farm infrastructure has become genuinely difficult to read.

A rath, as ringforts of this earthen type are often called, is a roughly circular enclosure dating typically to the early medieval period, broadly the fifth to twelfth centuries, and understood to have served as a defended farmstead for a single family or small community. This example at Knockane measures around thirty metres in diameter, enclosed along its north-western to eastern arc by a scarp, a cut or slope in the ground, rising to about 1.8 metres, while an earthen bank along the eastern to southern section reaches 1.6 metres. The entrance, 1.2 metres wide, faces to the south-east, a common orientation for such sites. There is also a possible souterrain in the interior; a souterrain is an underground stone-lined passage or chamber, typically associated with storage or refuge, and their presence inside ringforts is well attested across Ireland. Whether this one survives intact beneath the surface is not certain.

What makes the site particularly interesting as a physical object is the way it has been quietly altered over centuries of agricultural use without being entirely erased. The replaced western bank, the gap to the south, the narrow entrance still discernible to the south-east, all of these give a sense of a structure that has been continuously negotiated with rather than simply forgotten.