The largest of these, standing a metre tall and just over half a metre wide, leans against a natural rock outcrop directly behind All Saints' Well. Into its face, visitors over the years have incised a plain cross measuring roughly twenty centimetres in each direction, its groove only a centimetre deep, the kind of mark made slowly and deliberately rather than by any mason's chisel.

The practice of cutting or scratching crosses onto stones at holy wells, known as cross-inscribed stones, is scattered across Ireland and belongs to a long tradition of devotional action at sacred water sources. Holy wells were places where people came to pray, to seek cures, and to complete patterns, a term for the ritual circuits and prayers performed at such sites. The physical act of marking a stone was part of that devotion, a way of leaving something permanent behind. At Dromavrauka, this impulse was repeated at least five times across the stones gathered around All Saints' Well, each one a separate act of the same quiet intention. That the largest stone now rests against the outcrop rather than standing freely suggests it has shifted over time, though it remains in place among its companions.