The well itself is a modest but carefully made structure: U-shaped in plan, built from roughly coursed limestone rubble, and covered with limestone flags that slope gently downward from front to back. The opening, less than a metre wide and less than a metre tall, faces south-west. Inside, the base is stone-lined and still holds water. It is the kind of place that is easy to walk past without fully registering what you are looking at.

The well is associated with Saint Eilibh, recorded in 1836 as a sister saint of Lasair, a figure with her own cult site elsewhere in Sligo. By the early 1940s, the saint's name had shifted in local usage to Saint Ailbe, a reminder of how oral tradition reshapes identities over time. At that point it was noted that the well had been visited by people suffering from illness, with a particular association with mental disease, during the period from the 15th of August to the 8th of September, a window that corresponds roughly to the old harvest festival of Lughnasa and its surrounding weeks, when pattern days and well visits were traditionally observed across Ireland. By the 1940s, however, those visits had become infrequent. Approximately ten metres to the east lies a penitential station, a place where formal acts of devotion, typically prayers said while walking a prescribed circuit or kneeling at marked stones, would have been performed as part of the pilgrimage ritual. The combination of well, grave, and penitential station points to a once-coherent sacred landscape, now largely quiet on its boggy slope.