The example at Newtown in County Mayo has been steadily absorbed into the working landscape around it, to the point where modern field boundaries now cut straight through what was once a carefully defined enclosure. A property fence bisects the northern end, and two wide gaps have been cut through the bank on the north side, creating a convenient routeway for livestock moving across the field. The result is a monument that still reads clearly enough on the ground, but only once you know to look.

The rath sits on the level top of a gentle north-south rise, a subcircular earthwork roughly 42 metres east to west and up to 45 metres north to south. On its north-east to south-east arc it is defined by a low earthen bank, still standing about a metre high on the exterior at its south-east point, while the south-west to north-west arc survives instead as a scarp, a sloped edge cut into the ground, reaching 1.2 metres on the west side. The southern portion of the bank has been absorbed into a later field fence running roughly east to west. To the north of the property boundary, about 18 metres of the rath's arc has been levelled almost completely, with only a faint rise in the ground hinting at what once stood there. Inside, the western half sits at a slightly higher level than the east, and the interior surface is uneven throughout, with stony humps at the north-east and south-west and clusters of boulders at the south-east. A rough, interrupted line of low stones runs east to west through the eastern half of the interior, possibly the remains of an internal division that once separated different functional areas within the enclosure. A shallow linear depression running inward from the western scarp measures about 8.5 metres long and 0.45 metres deep; it does not appear to be a souterrain, an underground stone-lined passage sometimes associated with ringforts as a place of storage or refuge, since no stones remain in position to indicate such a structure.

The perimeter is ringed with hawthorn trees and brambles, particularly thick on the eastern side, which gives the site a somewhat enclosed quality on the ground even as the northern views open out towards the north-north-west. A higher ridge to the west blocks any sight of Lough Conn, which lies only 400 metres in that direction, a reminder that the slight prominence of the site was functional rather than commanding.