It was there in the earlier survey, drawn as a neat circular enclosure in the Westmeath countryside. By the later edition, it had been omitted entirely, not destroyed exactly, but worn down and obscured enough that the cartographers apparently saw nothing worth marking. The earthwork is still there, however, if you know what you are looking for.

A rath is a type of ringfort, the most common monument class in the Irish countryside, built predominantly during the early medieval period between roughly 500 and 1000 AD. Most were enclosed farmsteads, the bank and fosse (an external ditch) serving as a boundary and a modest defence for a family and their livestock. This particular example sits on a slight natural rise surrounded by low-lying wet grassland, which would have made the elevated interior genuinely useful. The enclosure is roughly sub-circular, measuring approximately 33 metres east to west, with a poorly preserved earthen bank and a shallow fosse that survives best along the eastern to southern arc. The interior rises gently toward the centre and retains faint traces of cultivation ridges running northeast to southwest, suggesting the enclosed ground was put to agricultural use at some point after the original structure fell out of use. A field fence cuts across the perimeter from south to west, the ordinary boundary-making of later centuries intersecting with something considerably older. Another earthwork sits about 370 metres to the east, and Grange Hall lies 120 metres to the west, placing this worn enclosure within a landscape that has accumulated features across a very long span of time.