The surrounding fields were long ago enclosed and drained as part of the estate attached to Derk House, and yet the circular outline of this ancient monument has survived, readable from aerial photography even after centuries of agricultural reworking.

A ring barrow is, in simple terms, a low burial mound of prehistoric date defined by a surrounding circular ditch, known as a fosse, which was dug to demarcate and perhaps to honour whatever lay at the centre. This example sits on a slight rise in reclaimed pasture, roughly 900 metres southeast of the summit of Derk Hill, which rises to 781 feet above sea level, and about 100 metres north of the townland boundary with Tonaree. When the Archaeological Survey of Ireland recorded it in 2007, they measured a roughly circular area of approximately 24 metres north to south and 23 metres east to west, defined by a shallow fosse some 4.55 metres wide and only 0.2 metres deep. That fosse survives best along two arcs, from west-northwest to east-northeast and from east-southeast to west-southwest. Earlier Ordnance Survey mapping at the 25-inch scale had already depicted the monument as a circular platform, with a diameter recorded then as approximately 27 metres. It is one of fourteen barrows clustered in the southern half of Derk townland, with the nearest example sitting immediately to the south.

The monument is not formally accessible as a visitor site, and the surrounding land is private agricultural pasture associated with the Derk House estate, located around 800 metres to the northeast. The drainage ditch running east to west just south of the barrow is a useful orientation point if you are studying the site on aerial imagery, which is arguably the clearest way to appreciate its form. The outline remains distinctly legible on Ordnance Survey orthophotos from 2005 to 2012 and on Google Earth imagery from November 2018. Anyone with a serious interest in the broader barrow complex would do well to consult the Sites and Monuments Record entries for the surrounding monuments before making any visit, as the grouping of fourteen barrows gives the individual site much of its archaeological significance.