This is a ring barrow, a low circular burial mound of the kind typically raised during the Bronze Age or early Iron Age, defined by a central mound or flat area enclosed within a surrounding ditch, known as a fosse, and sometimes an outer earthen bank beyond that. At Muingyroogeen, the mound itself has been levelled entirely, and only faint traces of the fosse and outer bank survive, enclosing a circular area measuring roughly 3.4 metres across its north-north-west to south-south-east axis.

What makes this small, worn feature quietly interesting is its relationship to the ringfort beside it. Ringforts, the enclosed farmstead settlements that were common across Ireland during the early medieval period, are often found in proximity to much older burial monuments, sometimes deliberately, since early medieval communities appear to have chosen or acknowledged ancestral or ceremonially significant ground when establishing their own enclosures. Whether the builders of the ringfort at Muingyroogeen were aware of the barrow beside them, or consciously situated themselves near it, is not something the physical remains can answer. But the proximity is noted, and the barrow predates the ringfort by potentially a thousand years or more.