That is part of what makes it so easy to overlook. But towards its centre, something changes: the bank swells to nearly four metres wide and 1.4 metres high, and a hollowed pathway, wide enough for a person to walk comfortably, runs along the crest. Whatever this structure originally was, it was built for more than keeping cattle in a field.

The name Claidh Buidhe, meaning roughly "yellow dyke" or "yellow fence" in Irish, attaches itself to more than just this townland. According to Bowman, writing in 1934, the name was also used for a subdivision of the neighbouring Knockskehy townland to the north-east, suggesting the earthwork once extended considerably further than what survives today. The 1842 Ordnance Survey six-inch map confirms this: it shows an additional stretch of around 450 metres curving south-westward toward the Owenanare River, a section that has since been removed. The surviving bank runs roughly north-east to south-west, is partially stone-faced, and sits in a landscape that also contains a rectangular enclosure near its south-western end, known locally as Coppely's castle, and a fulacht fiadh, a type of prehistoric burnt-mound cooking site, about twenty metres south of the earthwork's centre. Local tradition adds a curious detail: someone remembered only as "Coppely" was said to have driven a coach and horse along the top of the bank, which, given the hollowed pathway on its crest and its exceptional width at that point, is not entirely implausible.