The rath at Dunmoran, sitting on a low rise in undulating pasture near the southern shore of Sligo Bay, offers almost none of that. The site has been levelled, its defining features reduced to the subtlest of ground-level clues, and yet it survives, just about, as a legible trace in the landscape.

A ringfort, or rath, was the typical enclosed farmstead of early medieval Ireland, roughly the fifth to twelfth centuries, usually defined by one or more earthen banks and an outer ditch called a fosse. At Dunmoran, the circular area measures roughly twenty metres in diameter, and what defines it now is a slight artificial scarp, nowhere more than half a metre high across most of its circuit. The south-west section is the exception: there, a naturally-occurring rise in the ground was deliberately scarped to a height of one and a half metres, suggesting the original builders were pragmatic about using the topography to their advantage. A low bank of earth and stone, two metres wide and no more than forty centimetres above the interior surface, survives in fragmentary form along the south-east edge. There is no fosse, and any original entrance has been lost entirely. What remains is less a monument than an outline, a circular memory pressed into a field close to the bay.