It is, in fact, a causeway, roughly three metres wide, that connects the eastern end of the island to its western shore. What makes it quietly unusual is both its route and its company: it begins just outside an old graveyard enclosure, meanders along the island's northern edge, and comes to a stop near a structure known as St Finan's Cell, a small early Christian building whose name points to the monastic life once organised around this place.

The causeway is turfed over and only slightly raised above the surrounding ground, which means centuries of growth and field use have softened whatever original profile it once had. Several field boundaries cut across it along its course, suggesting that later agricultural activity reshaped the landscape around it without entirely erasing the older path beneath. The association with St Finan connects the island to the broader tradition of early Irish monasticism in Kerry, where small island sites were often chosen deliberately for their isolation, and internal pathways like this one would have given structure to daily movement between a community's key points, the burial ground, the oratory, the cell of the founding saint.