Enclosure, Carrowcashel, Co. Sligo

This one offers nothing of the sort. The circular enclosure recorded at Carrowcashel in County Sligo is entirely invisible at ground level, leaving no earthwork, no ridge, no shadow in the grass that a passing walker might notice and wonder about. It exists, for practical purposes, only on paper.

The site first appears on the Ordnance Survey six-inch map of 1838, one of the most systematically detailed cartographic exercises ever applied to the Irish landscape, and on that map it is drawn as a circular enclosure roughly 25 metres in diameter, sitting in low-lying marshy ground about 20 metres east of the Douglas River. Enclosures of this general type, ringforts and their variants, were once among the most common features of the Irish countryside, typically serving as enclosed farmsteads during the early medieval period. Whether this particular example belongs to that tradition, or to something earlier or later, is unknown. What is clear is that the ground has changed considerably since the map was made. The area around Carrowcashel has since been cut by a number of shallow drainage channels, the kind of routine agricultural improvement that quietly dismantles buried archaeology without anyone necessarily knowing what has been lost.