A bullaun stone, the term for a boulder bearing one or more cup-shaped depressions that are associated with early medieval religious sites, is visible on the outer face of the walled enclosure, and the threshold stone at the well opening has a similar shallow depression, suggesting that older materials were gathered and reused when the site took its present form. A statue of the saint, dated 1977, stands just to the west of the spring, and the whole enclosure was restored in 1998 by the Brosna Heritage Group under the guidance of local sculptor James Scanlon.

The well sits a short distance to the south-east of what is thought to be a large early church enclosure, the northern part of which now contains Brosna parish church. The Ordnance Survey Name Books of 1841 noted that St Moling was not originally associated with this part of Kerry at all, but with Luachair, somewhere near Graigue in Co. Carlow, and he is known historically as a Bishop of Ferns in Co. Wexford. Local folklore, collected from Brosna schoolchildren in the late 1930s, offered competing origin stories: one held that the saint was born close to the well itself, in a mud cabin a few fields from the church, and that the spring rose from the ground when the cabin fell. Another tradition, recorded by the folklorist Caoimhín Ó Danachair, describes Moling causing the well to appear in order to baptise a blind pagan chieftain, who was then cured of his blindness. The same source notes a second legend in which the saint drew water to the surface to cure a girl of fits, and records that angels were seen near the well. The water was believed to heal sore eyes and stiff limbs, and the trout, if seen, was held to be a sign that whatever was asked for would be granted. One account from the school collection tells of a woman who saw the fish and subsequently named her newborn son Moling.

Devotion at the well takes place on Saturdays throughout May. The practice involves kneeling at each of five stations around the enclosure and reciting a decade of the Rosary, repeating this three times in total, then sipping water from the well and casting a cross woven from rushes into the spring. An Irish-language prayer, preserved in the school collection, was once used at the well by those who had the language; it opens with the words "Go mbeannuighthear dhuit, a thobair naomhtha," blessing the holy spring and asking it for healing in the name of God. The five earthen mounds that formerly served as the stations appear to have disappeared, replaced by the five kneelers visible at the site today.