This rath, or ringfort, at Pallasbeg was not discovered by excavation or local legend but by the more prosaic method of aerial photography, spotted during the Bruff Survey and catalogued as Map 15, no. 15. From the ground, it reads as little more than a modest rise and fall in the grass, but that subtlety is precisely what makes it worth paying attention to.

A ringfort, to give the term some grounding, is a roughly circular enclosed settlement typical of early medieval Ireland, usually defined by one or more earthen banks and ditches and most likely used as a farmstead. The example at Pallasbeg is sub-oval in plan, measuring 17.5 metres east to west and 15.2 metres north to south, which puts it at the smaller end of the scale. Its defining feature is a scarped edge, that is, a deliberately cut and shaped slope, between 2.9 and 3.8 metres wide and rising between half a metre and just under a metre in height. Beyond that lies an external fosse, or ditch, up to 2.9 metres wide, and beyond that again a low counter-scarp bank, more pronounced on the northern side. The interior of the enclosure slopes gently downward from north to south. A shallow depression near the eastern edge, just inside the scarp, may indicate that material was quarried from this spot, possibly to build up the banks themselves. The record was compiled by Denis Power and uploaded in October 2013.

The site sits in gently undulating farmland and, given that it occupies poorly drained ground, the going underfoot can be soft, particularly after wet weather, which in this part of Limerick is not an uncommon condition. There is no visitor infrastructure here; this is a field monument in working agricultural land, and any approach should be made with awareness of that. The earthworks are clearest when the sun is low and raking light picks out the scarp and the outer bank, so early morning or late afternoon visits in spring or autumn tend to reward careful looking. The northern bank, being the most pronounced, is the best place to orient yourself and get a sense of the original layout.