This one in Caheradine, County Galway, announces itself with an absence. The site is classified as a cashel, a type of stone-walled ringfort that would once have enclosed a farmstead or small settlement, typically dating to the early medieval period. Yet when a surveyor came to record it, there was simply nothing to find. No wall, no bank, no scatter of stone. The field was pastureland, and the pastureland gave nothing away.

The 1838 edition of the Ordnance Survey six-inch map had recorded it clearly enough, a circular enclosure of roughly thirty metres in diameter, sufficient in size to have sheltered a household and its livestock within a defended perimeter. By the time McCaffrey conducted his survey and logged it as 'Not present', whatever had stood here had been completely erased. Whether the stone was robbed out for field walls, the ground levelled for agriculture, or the feature simply lost over generations of ploughing, no visible surface trace now survives. What does survive is a dried-up well in the same field, and a local name that quietly preserves the memory of it. The field is known as Gortnatober, from the Irish gort na tobar, meaning the field of the well. The well itself is dry, but the name has outlasted both the water and the monument it once neighboured.