What remains is partial: a drystone wall tracing an arc from west through north to east, with the southern portion entirely gone, lost beneath or absorbed into the agricultural landscape around it. The enclosure measures about thirty metres across on its east-west axis, and a field boundary cuts across it at both the eastern and western ends, a neat illustration of how later farming practice and early medieval archaeology tend to collide in the Irish countryside.

This is a cashel, the term used for a ringfort defined by a stone rather than an earthen boundary wall. Ringforts in general were the enclosed farmsteads of early medieval Ireland, built and occupied roughly between the fifth and twelfth centuries, and several thousand survive across the island in varying degrees of completeness. The stone-built variety, cashels, are particularly common in areas where rock was readily available for construction. At Garraun, a possible external earthen bank survives to the north, which may originally have formed part of the wider defensive or enclosing arrangement around the site. Whether that bank is genuinely associated with the cashel or represents a separate, unrelated feature is not fully certain. What the site makes visible, even in its damaged condition, is the slow process by which early medieval enclosures are gradually absorbed into the field systems of subsequent centuries, leaving fragments that require some interpretive effort to read as a coherent whole.