The well itself, known as Tobar na Croise or Turrasnadiha Well, appears to have been filled in or diverted at some point, but the cross-slab that once stood over it remains in place. Carved onto its south-south-easterly face is a Greek cross, a form in which all four arms are of equal length. The ends of those arms finish in slightly bulbous depressions, and a penannular circle, an almost-complete ring open at one point, wraps around the outer portion of each arm. Together, the circle and the arm it surrounds create what is described as a trifid motif, a three-lobed or trefoil-like form that gives the design an unusual rhythmic quality, somewhere between geometry and ornament.

The stone was a stopping point on Turas na Duimhche, a pattern or ritual pilgrimage circuit carried out on St. John's Day, the midsummer feast falling on 24 June. A turas of this kind typically involved moving between a set of sacred stations in a prescribed order, often combining prayer with circumambulation. This one extended well beyond the stone itself. Participants would travel to Bun an Turais, a point on the sea-cliffs roughly 600 metres to the south-east, and possibly also to Com an Bhráthar, a section of cliff about 350 metres to the south of the well. Folklore scholar Caoimhín Ó Danachair recorded that the turas was still being performed here until at least 1960, and the writer known as An Seabhac had documented its route and stations as early as 1939. That the practice survived into living memory, long after the well itself had been lost, says something about the durability of local devotional geography.