The one sitting on a low rise near Corbally in County Westmeath runs to roughly 61 metres north to south and 58 metres east to west, placing it well outside the ordinary range. That scale alone makes it an outlier, though nothing about its setting announces the fact. It occupies a gently elevated patch of well-drained grassland, with open views across the surrounding countryside, looking for all the world like a modest, unremarkable field.

The enclosure takes a sub-circular shape, defined by a slight bank of earth and stone, the kind of boundary that time and agriculture have worn down considerably but not entirely erased. Ringforts, also known as raths, were typically built during the early medieval period, roughly between the fifth and twelfth centuries, and served as the enclosed farmsteads of free farming families. The interior here rises gently towards its centre, and across that rising ground the faint corrugations of old cultivation ridges are still visible, running northeast to southwest. These ridges speak to a landscape that has been worked and reworked over centuries, the early medieval enclosure eventually absorbed into the ordinary rhythms of tillage and grazing. Two field fences, products of more recent land division, cut across the monument's perimeter, one intersecting it to the southeast and another to the north, a reminder of how thoroughly later agricultural patterns have been laid over earlier ones without ever quite obliterating them.