Santeria is an earth religion. That is, it is a magico-religious system that has its roots in nature and natural forces. Each orisha or saint is identified with a force of nature and with a human interest or endeavor. Chango, for instance, is the god of fire, thunder and lightning, but he is also the symbol of justice and protects his followers against enemies. He also symbolizes passion and virility and is often invoked in works of seduction. Oshun, on the other hand, symbolizes river waters, love and marriage. She is essentially the archetype of joy and pleasure. Yemaya is identified with the seven seas, but is also the symbol of Motherhood and protects women in their endeavors. Eleggua symbolizes the crossroads, and is the orisha of change and destiny, the one who makes things possible or impossible. He symbolizes the balance of things. Obatala is the father, the symbol of peace and purity. Oya symbolizes the winds and is the owner of the cemetery, the watcher of the doorway between life and death. She is not death, but the awareness of her existence. Oggun is the patron of all metals, and protects farmers, carpenters, butchers, surgeons, mechanics, and all who work with or near metals. He also rules over accidents, which he often causes.