The word sounds almost dismissive, but a midden, essentially a prehistoric or early historic refuse heap, is often among the most informative finds an archaeologist can encounter. Shells, animal bones, broken pottery, fish remains, tools worn down to uselessness; these accumulations of discarded material preserve a detailed, unheroic record of daily life that grander monuments rarely offer. Where a passage tomb tells you something about belief and ritual, a midden tells you what people ate for dinner.

The Grange area of Sligo sits in a landscape already dense with prehistoric activity. The broader region around Carrowmore and Knocknarea contains some of the most concentrated evidence of Neolithic and Bronze Age settlement in Ireland, and coastal or near-coastal middens in the north-west have in other cases proven to date back thousands of years, reflecting communities who relied heavily on marine and estuarine resources. Without more detailed excavation records attached to this particular site, it is not possible to say precisely when this midden was formed or what it contains, but its formal recognition as a monument places it within a tradition of discovery that has repeatedly reshaped understanding of how long, and how intensively, people have occupied this part of Ireland.