On a west-facing slope of Knockeenadara in Gortnahown, County Cork, there was once a rath, a type of ringfort defined by a roughly circular earthen bank enclosing a farmstead, typically dating from the early medieval period. Today there is nothing to see. The widening of the Cork to Dublin road consumed it entirely, and no visible surface trace remains.

The site has a paper trail that quietly records its disappearance over time. The Ordnance Survey six-inch map of 1842 shows a hachured circular enclosure approximately thirty-five metres in diameter, with a lime kiln, a small stone structure used for burning limestone to produce agricultural lime, sitting on its south-western bank. By the time the 1905 and 1935 maps were drawn, the diameter had grown to around forty metres in the surveyors' rendering, but the road was already beginning to bite; the western side was truncated, and by 1935 the eastern scarp had been replaced by an ordinary field fence. Each revision of the map marks a small loss, a boundary redrawn, a feature absorbed. The road that eventually erased the monument entirely was the same Cork to Dublin route that would have carried traffic past this hillside for generations before the final widening came.