Kilnanare Church (in ruins), Kilnanare, Co. Kerry

Not obscured by undergrowth or a collapsed wall, but genuinely invisible at ground level, its fabric entirely absorbed into or beneath the earth. The graveyard itself survives, the later church nearby still stands, but the earlier structure has simply ceased to be legible in the landscape.

The Irish place name gives something away: Kilnanare derives from Cill na nAodhán, meaning the church of the Aodhans, a dedication pointing toward early medieval origins. When the site was recorded in the 1940s, local tradition held that the original church or monastery here was founded by a contemporary of St. Tinian or St. Cummian, placing its beginnings somewhere in the 5th or 6th century. These were the generations of Irish monastic Christianity before the great scriptoria and round towers, when small communities gathered around a founding figure and left behind little more than a name and a reputation. St. Cummian is associated with a significant 7th-century letter on the dating of Easter, which gives some sense of the intellectual world such figures inhabited, though the tradition recorded here points to an even earlier founding generation. Whatever stood at Kilnanare in those centuries, it was substantial enough in memory to anchor the place name and the graveyard that followed.