The first edition of the Ordnance Survey six-inch map, produced in the nineteenth century, recorded a circular enclosure roughly forty metres in diameter at this spot, yet nothing of it remains visible on the ground today. No earthwork, no bank, no hollow in the grass. The place is marked, catalogued, and given a grid reference, but the thing itself has gone.

Ringforts, known in Irish as raths or lios depending on local tradition, were enclosed farmsteads typically built during the early medieval period, roughly between the fifth and twelfth centuries. They were usually defined by one or more circular banks of earth and stone, enclosing a space where a family would have lived and kept their animals. Thousands survive across Ireland in various states of preservation, but many others have been levelled over the centuries by ploughing, drainage schemes, or the gradual creep of agricultural improvement. This particular enclosure at Tobernaclug sits some 130 metres south-east of another ringfort that does still survive, suggesting this was once a landscape with a cluster of early settlement activity. Whether the vanished enclosure was roughly contemporary with its neighbour, or represents a different phase of use entirely, cannot now be determined from what remains, which is to say, almost nothing at all.