The rath at Brackloon sits on a prominent rise in grassland close to the Raford River, and while ringforts are common enough across Ireland, this one carries an unusual density of features for a single enclosure. A children's burial ground occupies the north-western quadrant of the interior, a reminder that these ancient enclosures were frequently reused long after their original inhabitants were gone. Cillíní, as such informal burial grounds are known, were typically reserved for unbaptised infants and others excluded from consecrated ground, and their presence within an older monument speaks to the way communities quietly layered meaning onto the landscape over centuries.

The rath itself is subcircular in plan, measuring roughly 43 metres east to west and 38 metres north to south, and is defined by an earthen bank with traces of an external fosse, or ditch, still visible at the north-east. Internal stone-facing survives along the southern arc of the bank, suggesting that at some point the structure was reinforced or partially revetted in stone. A gap in the bank at the south, around 3.5 metres wide, may represent the original entrance. The site has not escaped interference: quarrying has eaten into the bank at the west and north-west, leaving several gaps, and a shed has been built into the outer face of the bank at the east. Along the eastern interior, an L-shaped hollow is thought to mark the position of a souterrain, an underground passage or chamber typically associated with early medieval settlement and used for storage or refuge.

The combination of a possible souterrain, surviving stone-facing, a legible entrance gap, and a cillín within the same enclosure makes this a site where several threads of Irish historical experience converge in a small area of Galway grassland, close to the quiet course of the Raford River.