The story of Errigal Keerogue
The site is one of Tyrone's older Christian foundations. An early church here was linked to St Ciaran, also remembered as Dachiarog, and the place name itself is read as the oratory of Mochiarog. St Kieran's Well across the road carries the same dedication, marking this ridge as a place of worship long before the surviving stonework.
The visible church is the medieval parish church, recorded as destroyed in 1380. What stands today is a roofless ruin with opposed north and south doors and clear signs of more than one period of building, so the walls you see were patched and altered over time rather than raised in a single campaign.
The sandstone cross beside the church is the site's puzzle. Around two metres tall with a tapering shaft and a circular head, it was never finished. A ringed cross was lightly tooled on the east face, while on the west a flat boss and straight guide lines were marked out and then abandoned, most likely because of a flaw that runs through the stone.
The graveyard remained in use long after the medieval church fell, and it gathered an unusual collection of querns, the stone discs used to grind grain by hand. Several were built into the north wall for display, a reminder that this hilltop was a working community site and not only a place of burial. Today it is cared for by the Department for Communities Historic Environment Division and is open to visitors free of charge.