The well is known as Tobereennadomhnaigh, a diminutive form of Tobairin Domhnaigh, which translates loosely as the Sunday Well. When a local man was asked about it, he could point to its location but had never visited it himself. That particular detail says something quiet and melancholy about how such places fade, a name preserved in the landscape long after the ritual it was attached to has ceased.

The well itself is a roughly circular structure, about 1.7 metres by 1.55 metres, built from dry-stone walling roughly half a metre thick. A channel runs northward from it for nearly four metres, stone-lined and covered by seven stone lintels, the kind of careful, labour-intensive construction that suggests it once mattered to the people who built it. The water today sits only about twenty centimetres deep, and a number of stones have collapsed inward over time. Writing in 1908, a scholar named Power recorded that Tobairin Domhnaigh was visited on Sundays, and that a specific prayer, composed in Irish, was recited there. By the time more recent inquiries were made, the tradition had shifted in local memory to Easter Sunday visits, though even that version had long since lapsed. Holy wells across Ireland were typically the focus of a pattern day, a localised devotional gathering tied to a saint's feast or a fixed point in the liturgical calendar. Here, Sunday itself appears to have been the governing principle, which is unusual enough to suggest the well may have had a particular association with the Sabbath, though the specifics of that connection have not survived.