The rath at Moneen, in County Galway, is a more elaborate proposition. It is defined by three concentric earthen banks separated by two fosses, the ditches cut to channel water and reinforce the whole defensive arrangement, giving the enclosure an overall diameter of roughly 96 metres. A site of this scale and complexity, sometimes called a multivallate rath, was likely the residence of a person of some local rank, the extra circuits of earthwork signalling status as much as security.

The interior of the enclosure is clear and featureless at ground level, which is not unusual; whatever timber structures once stood inside have long since vanished, and the surface gives little away. What survives and impresses is the earthwork itself. When the site was inspected in October 1982, it was well preserved and free of overgrowth, the banks measuring up to 2.5 metres in external height. By January 2019, a forestry plantation had grown up around it, dulling its visibility considerably. A roadway also clips the outer bank along its north-east to south-east arc, a small but telling reminder of how agricultural and infrastructural pressures erode these monuments incrementally. Two other sites sit close by, a related enclosure roughly 98 metres to the west-south-west and a ring-barrow, a low circular burial mound of probable prehistoric origin, around 80 metres to the north-west, suggesting this patch of Galway pasture was a place of some significance across a long span of time.

The site sits in level pastureland with open ground falling away to the south-south-west, a position that would once have commanded clear sightlines across the surrounding landscape. The forestry now interrupts those views, and the plantation makes the earthworks less immediately legible from a distance than they would have been to earlier visitors. Approaching on foot and moving around the full circuit of banks and fosses is the most useful way to appreciate the scale of what was built here.