What survives is a cropmark, the faint discolouration in growing crops or grass that betrays buried features beneath the soil, revealing the outline of a bivallate enclosure: a roughly circular settlement defined by two concentric ditches, known as fosses, rather than the single ditch more commonly associated with these early medieval farmsteads. The interior diameter runs to around 30 metres, with the outer circuit reaching approximately 60 metres across, and an entrance gap is legible through both fosses on the south-eastern side.

Ringforts, or raths, are among the most numerous monument types in Ireland, with tens of thousands recorded across the country. They functioned primarily as enclosed farmsteads during the early medieval period, roughly the fifth to twelfth centuries, and a bivallate example, one with two enclosing banks and ditches, generally signals higher status than the single-vallate norm. The Ballymadder site sits on a slight south-facing slope that drops towards low sea-cliffs and a beach, a position that would have offered both outlook and proximity to coastal resources. What makes the location quietly remarkable is not the site alone but its company: two further raths lie within a few hundred metres, one roughly 200 metres to the north-east and another about 280 metres to the east, suggesting this stretch of coastline supported a cluster of early medieval settlement rather than a single isolated farmstead.