A ring barrow, a type of funerary earthwork typically dating to the Bronze Age and consisting of a circular enclosed area defined by banks and ditches rather than a mound, survives here in reasonably legible form. What makes the Moanmore example worth pausing over is how it sits in relation to its immediate neighbour: a second barrow lies just 1.9 metres beyond its outer bank to the east, close enough that the eastern edge of that neighbouring monument actually crosses the line where this barrow's outer banks and ditches would once have continued. In other words, the two were built so near to one another that the later one appears to have encroached on, or simply ignored, the outer circuit of the first.

The monument itself is a circular area eighteen metres in diameter, defined by an earthen scarp roughly half a metre high and between 1.8 and 2.2 metres wide. Outside that scarp sits a fosse, a shallow ditch, and beyond it an external earthen bank that varies considerably in width, between 4.2 and 5.2 metres overall, and stands just 0.1 to 0.4 metres above the surrounding ground. These are modest, worn dimensions, as one might expect from an earthwork that has endured millennia of agriculture and weather in poorly drained ground. A modern entrance eight metres wide has been cut through the northern bank, with a causeway laid across the fosse to allow access, presumably for farm machinery or livestock. The interior remains level and free of overgrowth, which at least means the form of the monument is readable at ground level.