Trees played a very important part in Celtic life and culture. One of the strongest features in Celtic beliefs was the Tree of Life. The Celtic tree of life represented harmony and nature and how they are brought together by the forces of nature. They believed that the deep roots and high branches of the tree connected both the under and uppers worlds to the earths plane. Through this connection the Gods of both worlds could connect and communicate with the people. Each Celtic tribe dedicated a lot of devotion towards these trees and it was common practice to plant a single large tree upon clearing a settlement. Cutting down one of these trees was seen as a great crime and was often an act committed by tribal enemies.