It curves gently, widens at one end, and terminates, apparently at nothing, at field boundaries on either side. On the ground it is easy to miss entirely. From the air, it reads as something older and more purposeful than the landscape around it.

The feature was first formally identified during the Bruff aerial photographic survey in 1986, recorded as Bruff 174 (AP 4/3605), when it appeared as a long, narrow, curvilinear mark interpreted as a potential road or trackway. It runs from the base of the eastern side of Knocksrahir, a hillock rising to 412 feet (125 metres) in the townland of Patrickswell, northward to the base of the western side of a hillock called Knockbolg in the townland of Loughgur, crossing the boundary between the two townlands along the way. Interestingly, the route does not appear as a road on the Ordnance Survey's six-inch maps of 1840, though it broadly follows a curving line of field boundaries that are shown on those maps, suggesting the underlying alignment had already shaped the landscape by the time the surveyors arrived. At its southern end, the earthwork presents as a sunken feature approximately 30 metres wide, narrowing to around 20 metres as it approaches and crosses into Loughgur. A sunken road of this kind, worn down through repeated use over generations, is sometimes called a hollow way, and its width here suggests considerable traffic at some point in its history.

The feature is best appreciated through aerial imagery rather than a field visit. The OSi orthoimages taken between 2005 and 2012 show it most clearly, and it is also partially visible on Digital Globe imagery from 2011 to 2013 and a Google Earth image captured on 20 September 2020. On the ground, the surrounding land is reclaimed pasture, and the termination of the earthwork at field boundaries in both directions means its original extent, and where it was once heading, remains an open question. The monument was compiled by Alison McQueen and Vera Rahilly, uploaded to the record in November 2020.