Within the eastern half of a larger enclosure, a roughly oval patch of ground, about twenty-four metres north to south and twenty metres east to west, is outlined by a low line of grassed-over boulders. Inside it, small set stones push up through the turf, uncarved and unlettered. This is a cillín, the type of informal burial ground used historically for unbaptised infants and others who, under Catholic practice, were excluded from consecrated ground. Such places tended to occupy the margins, literally and symbolically, often sited within older earthworks or at parish boundaries.

The Cloonfaghna site sits inside a pre-existing enclosure, suggesting the ground was already understood as set apart before it became a place of burial. Local memory recorded that it remained in use until around 1935, which places its active life well into the twentieth century, longer than many comparable sites. The practice of burying unbaptised children separately was not abolished in Church teaching until relatively recently, and in rural communities the informal use of cillíní persisted quietly for generations after such burials had become uncommon elsewhere. The stones visible at Cloonfaghna are small and unassuming, the kind easily overlooked as field clearance or random scatter, but their arrangement within the boulder boundary suggests deliberate placement over what may have been a long period of use.