At Tullyglass in County Cork, a holy well that once drew people for devotional rounds now lies somewhere beneath drained agricultural pasture on a north-east-facing slope, leaving no visible surface trace. The land was reclaimed roughly two decades before the record was compiled, and whatever remained of the well's physical presence, the water, the stones, the worn approach, went with it.

What we know of the place comes from a single earlier account. Writing in 1933, the scholar Ó Ríordáin noted a small well at the foot of a whitethorn tree, around which rounds were made. The practice of making rounds, known in Irish devotional tradition as "tobar" rounds or simply "the rounds," involved walking a prescribed circuit around a holy well a set number of times, often barefoot and in prayer, as an act of penance or petition. The whitethorn, or hawthorn, carried its own weight of meaning in Irish folk belief, long regarded as a threshold tree, associated with the otherworld and with protection. A well beside such a tree would have felt, to those who used it, like a place where ordinary ground became something else entirely. There is no record of which pattern day was observed here, or which saint, if any, the well was dedicated to.