St Patrick's Shamrock in Ireland, 5000 Years Old, New Grange, Ireland

St Patrick probably did use shamrock's to explain Christianity, the thing is and this is what we weren't told in school. pagan Irish people who heard it were like, this is class, I like this story, I'm invested, convert me. New Grange is one of the most important historical sites in the world, not just Ireland in the world. The structure was built in such a way that, on the shortest day of the year, the sun shines down - so 5000 years ago our ancestors had pretty decent knowledge of astronomy.