That is, in a sense, the point. A ringfort that appeared on Ordnance Survey maps in 1842, again in 1904, and again in 1938, a circular earthwork roughly 25 metres across that was still upstanding enough to show clearly in an aerial photograph taken in July 1975, has since been levelled entirely. No bank, no ditch, no surface trace remains. The site sits in undulating pasture above a stream valley, close to a sharp drop towards the Owentaraglin River to the north-east, and the only way you would know anything was ever there is because cartographers and surveyors kept recording it for nearly a century.

Ringforts, known in Irish as raths or lioses, were enclosed farmsteads typically dating from the early medieval period, roughly the fifth to the twelfth centuries. They consisted of one or more circular earthen banks, sometimes topped with a timber palisade, surrounding a domestic settlement. The Knocknageeha example was one of two single-ramparted forts noted on land belonging to a S. Walsh, both recorded by a Bowman in 1934, with diameters of approximately 35 and 31 yards respectively. A Broker recorded ringforts in the same area in 1937, and this site is likely the one described as lying in a field locally known as Lios field, with an associated underground passage. Such passages, called souterrains, were stone-lined tunnels dug beneath or beside ringforts, used variously for storage, refuge, or ventilation. Whether the souterrain here survived the levelling of the fort above it is not recorded.

The interest of a site like this is less about what a visitor might observe on the ground and more about what the paper record reveals: a monument that persisted in the landscape for at least 133 years of documented cartographic history before disappearing sometime after 1975. The field name Lios field, if it survives locally, would be its only remaining marker.