It is a mound barrow, a type of prehistoric funerary monument typically constructed from earth and stone to mark a burial, and this particular example measures thirteen metres across at its base, narrowing to just over a metre and a half at its flattened top, with a height of 1.7 metres. Compact and purposeful in shape, it has the look of something placed rather than accumulated.

What is quietly unusual about this barrow is the absence of a fosse, the encircling ditch that is commonly found around such monuments at ground level, usually created when material was scooped out and piled upward during construction. Whether one was never dug here, or whether centuries of agricultural activity and soil movement have simply levelled it beyond recognition, is difficult to say. Mound barrows of this kind are generally associated with the Bronze Age, though their precise dating and the nature of any burial beneath them can vary considerably. Without excavation, the Ardabrone mound keeps its history to itself.