That map, the Ordnance Survey six-inch edition of 1924, marks it clearly as an embanked enclosure, the kind of tidy cartographic confidence that the landscape has since quietly refused to honour. What was recorded then as a legible monument is now, in practical terms, largely concealed beneath dense overgrowth on a gentle west-facing slope.

The site belongs to a category of monument the Irish landscape holds in extraordinary numbers: the rath, or ringfort, a roughly circular enclosure defined by an earthen bank and, typically, a surrounding ditch. These were the farmsteads of early medieval Ireland, in use broadly from around the fifth to the twelfth century, built to shelter a household and its livestock rather than to serve any military function in the conventional sense. At Glendarragh, the surviving traces are modest. Surveyor Denis Power, who compiled the record uploaded in August 2011, noted that the enclosing element appeared to consist of a scarped edge, that is, a cut or shaped slope in the earth, rising to around 0.4 metres, with an external fosse, the ditch that would originally have been dug to throw up the bank beside it. These are slight remains, and the overgrowth makes even those difficult to assess with confidence.

The site sits in pasture, which means access depends entirely on the landowner, and there is no public path or formal designation to help a visitor find it. The west-facing slope would catch afternoon light, which might offer the best chance of reading slight earthwork features through shadow and texture, though given the extent of the overgrowth noted at the time of survey, the topography may be impossible to trace without a good deal of searching. Anyone with a serious interest in early medieval settlement might find the 1924 OS six-inch map a more rewarding starting point than the field itself, tracing the outline that the ground no longer readily gives up.