What makes them quietly puzzling is a question of identity: the Ordnance Survey maps label the well and the nearby structure as dedications to St Brendan, yet locally they are visited on the feast day of St Columcille. The two saints are quite distinct figures in Irish devotional tradition, and the mismatch, still alive in local memory, gives the site an ambiguity that official cartography has never quite resolved.

The complex consists of several elements arranged within a short distance of one another. A natural pothole, roughly thirty centimetres across, sits in a flat rock outcrop; a semicircular drystone cairn, about 1.2 metres high, has been built up around its southern side. Around a metre to the south-east stands what is marked as the 'Monument', a D-shaped cairn of similar height. Coins and the remains of flowers are still visible among the stones of both, suggesting the site continues to see devotional use. Fifty metres to the west, just below the high-water mark, lies a second pothole, larger at around forty centimetres, with a more irregular cairn raised above it; this one is referred to locally as St Brendan's Well. The historian Roderic O'Flaherty noted the place as far back as 1684, describing it as 'a place in memory of St. Brendan', and the reference was preserved in James Hardiman's 1846 edition of O'Flaherty's survey of Connacht. The dedication to Brendan, then, has documentary weight behind it. The counter-tradition linking the site to Columcille appears to come from local oral knowledge, the kind of thing that maps and antiquarian records tend not to capture.

The cairns are modest in scale, easily overlooked from a distance as natural accumulations of stone. The coins and flower remnants among the rocks are the clearest sign that this is a working devotional site rather than an archaeological remnant, and that distinction is worth keeping in mind when visiting.