The enclosure measures roughly 200 metres east to west and 150 metres north to south, its boundary formed by a stone-faced bank of clay and rubble, still surviving to around half a metre in height and four to five metres wide in places. That a boundary of this scale has endured at all, half-swallowed by trees and time, gives some sense of how substantial the original foundation must have been.

The site is associated with St Brendan of Clonfert, the sixth-century monastic founder best known to later tradition as Brendan the Navigator, whose voyages across the Atlantic became one of the great adventure stories of medieval Irish literature. Whether or not the legendary journeys have any basis in fact, Brendan's historical credentials are well established; he founded the monastery at Clonfert in County Galway around 561 AD, and his name became attached to a scatter of ecclesiastical sites across the west of Ireland. Within this enclosure, the remains include a church, a graveyard, a cross-inscribed pillar-stone, and an inscribed slab. The pillar-stone is a type common to early medieval Ireland, where simple incised crosses served both devotional and boundary-marking functions, while inscribed slabs often carried commemorative text, sometimes in ogham, the early Irish script formed from notched lines along a central stem.

The enclosure boundary has modern entrances cut through it at the south and south-west, which suggests the site has remained in some form of use or at least in local memory. The woodland setting, gently undulating ground, and proximity to the lough shore would have made this a practical location for an early monastic community, with access to water and some natural shelter. What survives is modest in profile but considerable in extent, the kind of place whose significance only becomes clear once you begin to measure it out.