Ogham stone

Ogham stones can be upright monoliths or recumbent slabs, onto which ogham script has been incised. Ogham script consists of groups of 1-5 parallel lines and notches cut along the side or across the edge of a stone to represent the sounds of the Irish language. It is usually read up the left angle. The inscription gives a person's name (usually male) and immediate antecedent/s or tribal ancestor. The stones may have functioned as memorials, grave markers or territorial markers and date from the late 4th to the early 8th century AD.