Irish cross-slabs and high crosses A graveslab from Clonmacnoise. Clonmacnoise scripture cross. One of the Ahenny high crosses in Tipperary. Early crosses, south Kilkenny. Early cross at Castledermot, Kilkenny. Monasterboice high cross and round tower. Monasterboice high cross. Castledermot high cross and round tower. The Hand of God at Monasterboice. A small cross pillar at Gallen Priory in County Offaly.