It looks, at first glance, like an unremarkable landscaping feature, overgrown with old whitethorn bushes and shaded by mature trees. In fact, it is almost certainly a surviving fragment of the Pale Ditch, the earthwork boundary that once separated English-administered Ireland from the Gaelic territories beyond, one of the more consequential lines ever drawn across the Irish landscape.

The Pale, as a formal administrative concept, took shape in the late medieval period, and its boundary was marked in places by a raised bank with a fosse, or ditch, on either side, intended less as a military fortification than as a legal and territorial marker. The Balally section survives in two stretches running roughly north to south, with a combined length of around 220 metres. The bank itself is flat-topped, between three and four metres wide at the top, six metres at the base, and standing about 1.2 metres high, better preserved towards the southern end. The flanking fosses are largely silted up, now only around 0.3 metres deep, though their outlines remain visible. The route of the Pale Ditch through this area was confirmed by Ball and Hamilton in their 1895 history of the Parish of Taney, a finding later cited by Healy in 1978. Investigative excavations carried out in 1996 traced the ditch a further 63 metres northward from the nearby Kilcross estate, running through what was then the grounds of the Central Bank.

The earthwork sits within the green area of Moreen Housing Estate and can be approached on foot through the estate. The southern section is where the bank is most legible, so it is worth starting there and walking northward. The whitethorn bushes growing along both faces of the bank are characteristic of old boundary features across Ireland, and their presence here is itself a quiet indicator of age. There are no interpretive signs or formal markers, so knowing what you are looking at beforehand makes the difference between seeing a grassy mound and recognising a medieval frontier.