Kildalton CrossKildalton Cross. The Kildalton Cross is a Celtic high in the churchyard of ruined medieval parish church on the island of Islay, Scotland. Carved in the second half of the 8th century AD it is often considered the finest surviving Celtic cross in Scotland. The High Cross of Kildalton, is closely related to the St John's and the St. Martin's crosses on Iona. The cross stands nearly 8 feet in height and the arms are 4 feet across. The depictions of the