Lignum Crucis, or the "Wood of the Cross," refers to the wood believed to have been used to make the cross on which Jesus Christ was crucified. This relic holds significant importance in Christian tradition, symbolizing sacrifice and redemption. Various legends and historical accounts describe its origins, often linking it to the Tree of Knowledge or the Tree of Life from the Bible. Throughout history, pieces of the Lignum Crucis have been venerated in churches and cathedrals, with many claiming to possess fragments of the true cross. These relics are often displayed during religious ceremonies, emphasizing their role in the faith and the connection to the crucifixion event.