That absence is itself a kind of information. The peninsula is dense with prehistoric remains, and a structure significant enough to be catalogued but too little studied to have had its details published suggests something that has slipped, so far, between the cracks of formal documentation.

Megalithic structures is a broad term covering everything from portal tombs and wedge tombs to standing stones and stone rows, most of them erected somewhere between five thousand and three thousand years ago during the Neolithic and Bronze Age periods. The Beara Peninsula has a particularly high concentration of such monuments, many of them associated with the same communities who worked the area's copper deposits in the Bronze Age. Barrees sits in this landscape, a small townland in a part of Ireland where the fields still contain things that predate written history by several millennia. Without further detail on record, the specific form of this structure, whether a tomb, a stone alignment, or something else, remains uncertain.