The "Lauburu" is a traditional Basque symbol characterized by four curved arms forming a sort of spiral. Each arm is connected to a central circle, and the whole symbolizes duality and unity, as well as the connection between the four elements or directions. It is also known as the "Basque cross" or "Celtic Basque cross."

This symbol has a long history in Basque culture and has been used in various forms over time. While its precise meaning may vary depending on interpretation and region, it is commonly associated with concepts such as life, unity, strength, and protection.