A slab 36ins by 8.5ins, incised with a linear cross 19ins by 5ins - the slab was built into the wall above the arch entrance to the barn of Hen-dy, but sometime in the 1980's the slab was moved to the NW corner of the tower of St Mary's Abbey.
Source: Cadw scheduling description. F.Foster/RCAHMW 26.07.2007