The designation itself is quietly telling. It suggests something that resisted easy categorisation when surveyors encountered it, stones whose number, spacing, or orientation declined to conform to recognised patterns.

Derrynabaunshy is a rural Mayo townland, and the landscape of that part of the west of Ireland is one in which prehistoric and early medieval stone monuments are not uncommon. Mayo contains numerous standing stones, burial cairns, and field systems dating back thousands of years, many of them poorly documented and some only partially understood. An anomalous stone group, as a category, may indicate a disturbed prehistoric monument, a natural glacial deposit that attracted human attention or modification at some point, or something genuinely unusual in its original design. Without further detail on the specific stones at Derrynabaunshy, it is difficult to say more with any confidence, and the available record for this particular site remains sparse.