It is a souterrain, a type of man-made subterranean structure built during the early medieval period in Ireland, typically from around the seventh to the twelfth century. Constructed from drystone walling and roofed with large stone lintels, souterrains were dug into the earth beside or beneath ringforts and settlement sites. Their precise function has long been debated, with theories ranging from cold storage for dairy produce to places of refuge during raids.

The Leitrim example in Clare belongs to a category of monument that is relatively common across the Irish landscape yet frequently overlooked, partly because so many remain as slight surface depressions or are only partially visible above ground. Clare itself contains a considerable number of such features, often associated with the dense concentration of ringforts across the county. Beyond its classification and location, the specific details of this particular souterrain, its dimensions, its state of preservation, and any associated finds or structures, remain outside what is currently available for general access.