Earlier this year I saw an online lecture by an Irish archeologist Michael Gibbons who specialises in Irish pilgrimage traditions.
His talk is mainly about pilgrimage sites in Ireland but especially at the beginning there are several references to, and photographs of, ogham stones. There are also many references to the pre-christian traditions and an explanation of how the Irish persisted in ‘the old ways’ during the first wave of Christianity. When Oliver Cromwell took over England and Roman Catholicism was banned the Irish had their old traditions that they quickly returned to.
Michael also explains that Ireland has better archeological pickings due to the ongoing Irish believe in ‘the Fary folk’. This meant that any ancient sites were understood to be sacred and not to be tampered with. Unlike many countries where old sites were destroyed in the name of progress.
This link to the lecture is from his sister’s website. She takes tours to New Grange so if you follow this link to the lecture you might like to also look at her website to learn more about New Grange a prehistoric ritual site and passage tomb in the Boyne valley near Dublin, Ireland that is 500 years older than the oldest Egyptian pyramids.
Additional links to pictures of Ogham stones: