This one exists, for now at least, only as a shadow in the soil. At Dromore in north Cork, an arc of a fosse, curving roughly from west to north, shows up as a cropmark in aerial photography taken in July 1989. A fosse is simply a ditch, and when one is buried and forgotten, the disturbed earth above it tends to encourage slightly different plant growth from the surrounding land, a difference subtle enough to be invisible at ground level but legible from the air, particularly in dry summers when crop stress makes the contrast sharper. That arc is all that remains visible of what was probably a circular enclosure, the kind of enclosed space that appears throughout rural Ireland in various forms and periods, from prehistoric ritual sites to early medieval farmsteads.

The 1989 aerial survey caught just enough of the curve to suggest a full circle once existed here, though how much survives beneath the surface is unknown. What adds quiet interest to the site is its proximity to another feature: a ring-ditch recorded about 80 metres to the north-north-west. A ring-ditch is typically the buried remnant of a circular earthwork, often associated with prehistoric burial or ritual activity, its bank and internal area long since ploughed flat, leaving only the encircling ditch as a trace. Whether the two features at Dromore are related in date or function is not established, but their closeness is the sort of clustering that tends to suggest a landscape that was, at some point, deliberately and repeatedly used.