It is the kind of feature that most people on the nearby railway line would pass without noticing, yet it has survived in the landscape long enough to have been carefully measured, described, and puzzled over by antiquarians more than a century ago.

The antiquarian T. J. Westropp, writing between 1917 and 1919, recorded the mound in some detail. A burial mound of this type is generally understood as a prehistoric funerary monument, typically a raised earthen or stone structure placed over one or more burials, though the specific origins of this example have not been excavated or firmly dated. Westropp described it as "a perfect little oval mound" standing between eleven and twelve feet high, roughly forty-two feet across on its north-south axis and thirty feet across at the top on its east-west axis. The surrounding fosse, a term for the ditch that typically encircles such monuments, he measured at fifteen feet wide and up to five feet deep, noting that it was partly wet and lacked any outer bank or ring. The Ordnance Survey's twenty-five inch mapping depicted the feature as a raised circular platform approximately seventeen metres in diameter, defined by a scarp and the fosse to the north, with a stream cutting across it to the west. A second site, Knocklong fort, lies just two hundred metres to the south, suggesting that this corner of Limerick was, at some point, a place of some significance.

The mound sits in working farmland in Knocklong West, immediately west of a watercourse and about two hundred and sixty metres south of the railway track. Access would require landowner permission, as it lies within private pasture. Aerial imagery from September 2019 shows the mound still clearly visible as an oval earthwork from the south-east, south, and west, with a field boundary running north to south intersecting it on the eastern side. The trees that partly surround it mean it reads differently depending on the angle of approach; the clearest view of the fosse and mound profile comes from the southern and western sides.