At Toberawnaun in County Sligo, a series of relict field boundaries sits quietly in the landscape, listed in the Record of Monuments and Places since 1995 under the classification of field banks, yet notable mainly for how unremarkable they are. They were absent from the earlier Sites and Monuments Record of 1989, added later, and assessed as appearing no different from the other boundaries in the surrounding area, with no strong indication of any great age.

The boundaries are no longer in active use, which gives them the status of relict features, meaning they survive as earthworks or overgrown banks rather than functioning divisions of farmland. Their course was documented on the 1913 edition of the Ordnance Survey six-inch map, placing them to the north-north-west of a souterrain recorded nearby. A souterrain is an underground stone-lined passage, typically associated with early medieval settlement in Ireland, often used for storage or refuge. The proximity to such a feature is perhaps the most intriguing detail here, though the field banks themselves are not thought to share its age or significance. They are, in essence, the ordinary working boundaries of a farmed landscape, preserved by abandonment rather than by any particular historical event.