That detail alone speaks to the intimacy of this place. The rath at Na Gleannta Thuaidh is a bivallate ringfort, meaning it is defended by two concentric earthen banks with a fosse, or ditch, cut between them, and it sits looking out along the valley of the Milltown river with the kind of clear, open prospect that early medieval farmers valued both practically and symbolically.

The internal diameter runs to roughly 25 metres north to south and just over 26 metres east to west, enclosing a subcircular space that once held two, possibly three, hut-sites. The inner bank is the more imposing of the two, rising to about 2.8 metres above the base of the fosse and faced on its interior side with drystone masonry still standing up to 1.7 metres high in places. The fosse itself is around 4 metres across. The outer bank is lower and earthier, though stretches of drystone revetment survive on both its faces. The original entrance faced south-west; the wider gap now visible at the west-north-west is likely a later addition. That original south-western entrance is narrow, just 0.65 metres through the inner bank, its sides still lined with drystone walling. The north-eastern quarter of the interior is largely given over to a spread of stone collapse. One small structure, measuring only 2 by 2.4 metres internally, survives with walls reaching 0.4 metres in height; it may once have been a hut but was perhaps later reused as a sheep-shelter, the original stonework cannibalised for the purpose. A second hut near the north-western bank appears rectangular on plan, though its outer wall-face curves, and its remains have collapsed almost entirely to ground level. The flagged pathway linking the main entrance area to the hut zone, partly edged with stones set upright on their sides, is one of the more quietly evocative details at the site, a trace of daily movement across an interior people once moved through with purpose. The site was documented by J. Cuppage as part of the Dingle Peninsula archaeological survey published in 1986.