Among the recycled stones pressed into its walls were three ogham stones, the carved upright markers that use a system of notches along a central line to record names and lineage in early Irish, and a carved cross-slab. That a monument of such obvious Christian significance ended up as a building block in a later structure is the kind of quiet archaeological puzzle that the Dingle Peninsula tends to produce in abundance.

The cross-slab itself, catalogued as part of the wider rath and souterrain complex at Áth An Charbaill, carries on its exposed face two plain crosses set within circles, one positioned above the other. The stems of both crosses extend beyond the boundaries of their enclosing circles and finish in bifurcated terminals, meaning each stem splits into two at the end, a distinctive decorative feature found on early Christian carved stonework. The description of the slab comes from J. Cuppage's 1986 archaeological survey of the Corca Dhuibhne region, the Dingle Peninsula, a survey that remains a foundational document for understanding the density and variety of early medieval remains in this part of Kerry. The reuse of earlier carved stones in later construction was not unusual in this period; the stones were to hand, they were substantial, and their original context had perhaps already been forgotten or simply ceased to matter.