Without knowing what you are looking at, you might walk past it entirely, reading it as nothing more than an uneven bank where one farmer's land meets another's. That unremarkable appearance is, in a sense, the point: this is what a ringfort looks like once the process of agricultural levelling has done its slow work over generations.

Ringforts, also called raths, were the most common type of Early Medieval settlement in Ireland, typically circular enclosures defined by one or more earthen banks and ditches, enclosing a farmstead and its immediate outbuildings. This one near Glantane was already being described as levelled by Bowman as early as 1934, though Ordnance Survey maps from 1842, 1904, and 1938 all recorded it as a legible, hachured circular enclosure, with the outer fosse, the defensive ditch surrounding the bank, visible on the 1938 edition. What those maps captured was a site already in decline, being gradually absorbed by the working landscape around it. What survives today is an earthen bank reaching roughly a metre in height internally and just over a metre on the exterior, persisting mainly along the north-north-east to east arc of the circuit, with a lower rise detectable to the east and around the western and northern edges.

Perhaps the most intriguing detail is the possibility of a souterrain within the interior. Souterrains were underground stone-lined passages or chambers, built beneath or beside ringfort enclosures during the Early Medieval period, and used variously for storage, refuge, or ventilation of dairy produce. Their presence often outlasts the above-ground structure, surviving as subsurface voids long after the enclosing banks have been ploughed or grazed flat. Whether the feature recorded here represents a genuine souterrain or simply a subsurface irregularity remains uncertain, but it adds another layer to a site that, on the surface, gives little away.