Roughly sub-rectangular, measuring around 23 metres northwest to southeast and 18 metres northeast to southwest, it is defined by a scarp, the kind of gentle slope that marks the edge of a deliberately shaped earthen form, and it is the sort of thing you might walk past without a second thought. What makes it worth pausing over is partly its classification, and partly the company it keeps: it sits in the northeast quadrant of a broader archaeological complex, with a related enclosure lying just 50 metres to the northwest, and the Glounnacroghery Stream running within a dozen metres to the southwest.

The earthwork appears in two key early accounts. Thomas Johnson Westropp, writing in 1918, noted it as one of the rings to either side of the gully of Glounnacroghera, grouping it with the other earthworks that populate this stretch of land. A more detailed description came from Seán P. Ó Ríordáin in 1940, who catalogued it as one of three forts in the townland of Cush and characterised it as belonging to the raised-centre, flat top kind, a form of enclosed earthwork where the interior platform is elevated above the surrounding ground. Curiously, it does not appear on the first edition Ordnance Survey six-inch map of 1840, though by the time the 25-inch edition was produced in 1897, it was recorded clearly enough. A 1971 oblique aerial photograph, taken as part of the Cambridge University Collection of Aerial Photography, shows the outline of a circular-shaped earthwork defined by a scarp with an external bank, a slightly different reading from the sub-rectangular form seen on later satellite imagery, suggesting that what survives above ground today may only partially represent the original structure.

More recent remote sensing has added further detail. Digital Globe and Google Earth orthoimages taken between 2011 and 2013 show the monument intersected at its northern end by a linear cropmark running northwest to southeast, which turns out to be a relic field boundary that was already visible on the 1840 Ordnance Survey map and so post-dates 1700. Separately, an aerial photograph taken between 2005 and 2012 revealed a rectangular cropmark to the east of the earthwork, approximately 8 metres by 18 metres, whose function remains unspecified in the record. The site is on private pasture land, so access would require landowner permission, and the earthwork itself is best appreciated through the layered evidence of historical maps and aerial imagery rather than any dramatic visible feature on the ground.