It is easy to miss entirely, and that near-invisibility is, in its own way, the point. What survives is the faint outline of a rath, a type of ringfort that would once have been a raised, roughly circular enclosure of earthen banks, typically serving as a defended farmstead for a single family of some local standing during the early medieval period. Here, the banks have all but dissolved into the land, and what remains is a scarp, a slight change in ground level, mapping out a subcircular shape measuring approximately 29.8 metres north to south and 24.3 metres east to west.

Thousands of ringforts survive across Ireland in varying states of preservation, but sites like this one represent the quieter end of that spectrum, where erosion, centuries of agricultural activity, and the slow work of weather have reduced something once purposeful and inhabited to little more than a suggestion in the turf. The Carhoon example sits on a gentle rise, which would have been a deliberate choice by whoever constructed it; elevated ground offered both practical drainage and a degree of visibility across the surrounding landscape. Without dating evidence noted for this particular site, it fits into a broad tradition of such enclosures associated with the early medieval centuries, roughly 500 to 1000 AD, when the rath was the most common form of rural settlement across Ireland.