Roughly 36 metres across at its base, it rises in a dome of earth and stone, its interior ground level climbing noticeably towards the centre. A low scarp, somewhere between 0.6 and 0.8 metres high, traces its perimeter. What makes it genuinely difficult to read is the question of whether it was made, shaped, or simply found and then dressed up. The answer, as far as anyone can tell, is possibly all three.

The mound is described as partially natural, which places it in an awkward category. It may have begun as a geological accident, a drumlin-like rise left by glacial activity in the midlands landscape, and been worked into something more deliberate at a later point. The presence of trees planted across it raises the possibility that it was incorporated into a designed landscape, the kind of ornamental parkland feature that Irish estates of the eighteenth or nineteenth century occasionally built around a convenient natural prominence. A bare earthwork becomes a grove, a grove becomes a focal point, and the original character of the thing quietly disappears beneath the planting. Whether that is what happened here remains uncertain. No firm historical attribution or dating has been established for the Clynan mound, and the ambiguity is part of what makes it worth noticing.