It measures roughly fifteen metres across, slightly wider east to west than north to south, and the raised edge that marks its boundary varies from about twenty centimetres high on the northern side to between forty and sixty centimetres elsewhere. It is the kind of feature that reads, at a glance, as something ancient, perhaps a ring fort or a burial mound, yet its classification is more modest and in some ways more intriguing: a designed landscape element, a tree-ring, almost certainly planted as an ornamental feature rather than a defensive or funerary one.

Tree-rings of this kind were a common enough addition to Irish estate landscapes from the eighteenth century onward, used to punctuate open ground, frame views, or simply mark out a pleasing geometric form on otherwise unremarkable terrain. What is notable about this example is its longevity in the cartographic record. It appears on the Ordnance Survey six-inch map of 1837, Ireland's first large-scale national survey, meaning it was already established and recognisable as a circular feature by the time those surveyors passed through. It appears again on the 1914 edition, unchanged in outline, which gives some sense of how stable these small earthwork-and-planting combinations can be across generations. The scarp that defines the circle is not dramatic, but it is consistent enough to have held its shape across nearly two centuries of documentation.