Each mound is oval in shape, roughly ten metres by seven, and about a metre high, with loose stones scattered across their tops. They sit approximately four metres apart. Easy to walk past without a second glance, they are the kind of earthworks that disappear into a landscape unless someone thinks to look carefully.

What makes the site quietly significant is the paper trail pointing to its age. The Down Survey, a remarkable mid-seventeenth-century mapping project carried out between 1655 and 1656 to document landholding across Ireland, appears to show a mill at this precise location on its barony map for the area. If the identification is correct, the mounds represent the physical footprint of a structure already old by the time Cromwellian surveyors were charting the country. Adding texture to this are two stone-lined channels recorded by a local source, J. Hickey, running into one of the mounds for around thirteen feet. Each channel measures roughly two and a half feet high and two feet wide, built with mortared random-rubble walls and a lintelled stone roof. These are consistent with a mill race, the narrow watercourse used to direct river flow onto a mill wheel. A second mill is also recorded on the southern bank of the Awbeg nearby, suggesting that this stretch of river was at some point a place of considerable industrial activity, however modest the scale.