The enclosure at Garryduff, in County Tipperary, is precisely that kind of place: a sub-circular earthwork, roughly 62 metres north to south and 56 metres east to west, defined by a bank that shows clearly enough from above or on paper but leaves no impression at ground level. It exists, in a practical sense, as cartographic memory rather than visible landscape.

The site sits on a north-west-facing slope in rolling pastureland, and from that position it commands a good view northward toward Lady's Abbey. Enclosures of this general type, ringforts being the most familiar category, were a common feature of early medieval Irish settlement, typically serving as enclosed farmsteads for a single family and their livestock. Whether this particular enclosure belongs to that tradition or to some earlier or later phase of activity, the notes do not say. What can be said is that the Ordnance Survey's six-inch mapping of 1840 recorded it, and the revised edition of 1907 recorded it again, which at minimum confirms that the earthwork was still legible in the landscape at both those dates, even if it has since been reduced by agriculture or simple time to something the eye can no longer catch from the ground.