The site is modest in scale, roughly nine metres east to west and six metres north to south, sinking to little more than half a metre at its deepest, with two courses of large limestone boulders marking its southern and western edges. It is the kind of feature that could pass unremarked by anyone who did not know what to look for, yet its name, Saint Keiran's Bed, signals a category of place that once structured the devotional life of communities all along the Irish Atlantic seaboard.

Sites called "beds" associated with saints are a recurring feature of Irish sacred geography, typically understood as places where a saint rested, prayed, or performed some formative act. Here, a modern shrine and statue of St Kieran stands at the northern side, and in front of it sit two limestone boulders with hollowed-out depressions resembling bullauns. A bullaun is a rounded hollow ground or worn into a boulder, found at many early ecclesiastical and sacred sites in Ireland, and often associated with ritual use or, in later tradition, with the curative power of the water that collects in them. According to Korff and O'Connell, writing in 1985, an all-night vigil was held at this spot on the last Sunday in July, concluding with a Feis at Tracht, a festive gathering at the nearby strand. That combination, the night watch and the communal celebration, is characteristic of the pattern tradition, the rounds, prayers, and socialising that once marked saints' feast days across the country.

The grassland setting, the Burren limestone, the bay visible nearby, and the worn hollows in the stone give the site a quiet material weight that sits oddly against its modest appearance. The last Sunday in July corresponds broadly with Garland Sunday or Domhnach Chrom Dubh, the old festival marking the end of summer's first phase, a convergence that many such holy sites share, their Christian observance layered over a much older seasonal rhythm.