Sitting atop a limestone crag on a gently south-east facing slope in Milltown North, this ringfort, known as a cashel, a term used for ringforts built from stone rather than earthen banks, retains a dry-stone wall of considerable bulk: 3.35 metres wide, and standing 2.4 metres high on both its exterior and interior faces. At some point a tower house and a souterrain, an underground passage or chamber often used for storage or refuge, were also part of this enclosure. Neither leaves any visible trace today.

The monument was recorded by Denis Power and uploaded to the national record in August 2011. The cashel measures roughly 44 metres north to south and 43 metres east to west, making it a substantial enclosure by any measure. Its entrance, facing between south-east and south-south-east and spanning 9.2 metres, is flanked at either side by boulders dumped against the outer face of the wall, a detail that raises quiet questions about whether those were placed deliberately as reinforcement, or are simply the result of later disturbance. The northern arc of the wall is the best preserved section, partly because it was incorporated into the surrounding field boundary system, which gave it a secondary, practical life that incidentally helped protect it. Inside, the ground is uneven rough pasture, divided by a low scarp edge of just over a metre, separating a slightly irregular lower area towards the north-north-west. The site is subject to a preservation order under the National Monuments Acts 1930 to 2014, issued as preservation order number 4/1977.

The site sits in working farmland, so access will depend on the goodwill of the landowner and the usual courtesies that apply to visiting monuments in pasture. The limestone crag setting means the ground can be uneven underfoot, and the interior offers little to see at ground level beyond the grassy unevenness that hints at what once stood here. The northern wall section, where the stonework is most intact and best articulated, rewards a slow look; the sheer width of the wall becomes more apparent up close than any photograph would suggest.