This rounded boulder, with flattened upper and lower surfaces, is 1.05m long and, as on the other stones, the ogham inscription follows an imaginary stem-line along its sides. It reads: TRIA MAQA MAILAGNI CURCITTI. Macalister noted a difference in the technique of execution between the first 3 and 4th words, and suggested that two separate inscriptions were involved; this difference is not however particularly evident. The upper face of the stone bears an unusual cross motif. The ends of the side arms take the form of a trident or 3-pronged fork, the arms themselves forming the middle prong. A short cross-bar directly below the end of the upper arm gives the impression of a small cross here. (Cuppage 1986, no. 820, no. 1)