It’s a well known fact that the Celts – and later the early Christians – in Ireland were extraordinarily creative people, regularly expressing their philosophies, beliefs and histories through art. At first this was done through stone carving, metalwork and most likely wood. Celtic society revolved around the concepts of war and wealth, so they spent much of their time creating intricately decorated weapons and jewellery from bronze and gold, to show off their fighting prowess and status in society. They were also a highly spiritual society with an astronomical and seasonal calendar, various ritualistic festivals throughout the year, and revered burial practices. At sites where these ceremonies took place stone monuments were very common and often featured elaborate carvings, sculptures and the like.
And here for the image at the top