Raths, or ringforts, are among the most common archaeological monuments in Ireland, with tens of thousands recorded across the country, yet each one marks a specific choice: a family, or a small farming community, selected this particular patch of ground, raised a bank and ditch around it, and made it home. That so many survive at all, even as grassed-over humps and hollows, is largely because later generations tended to leave them alone, wary of disturbing the fairy forts they were believed to be.

The rath at Darhanagh belongs to this broad tradition of early medieval enclosed settlement, most likely dating to somewhere between the fifth and twelfth centuries, the long period during which this form of enclosure dominated rural Ireland. A typical rath consisted of one or more earthen banks, sometimes faced with stone, enclosing a roughly circular area where a dwelling, outbuildings, and perhaps a souterrain, an underground stone-lined passage used for storage or refuge, might be found. The townland name Darhanagh itself hints at older layers of place, Irish townland names frequently preserving geographical or historical detail that the landscape no longer makes obvious at a glance.