Piedra Santa is a large rock outcrop near Malalcahuello in AraucanÃa Region, Chile. It is best known for folklore and folk catholicism associated to it. Piedra Santa is said to be a Mapuche princess, and the daughter of great warrior, turned into rock.[1] People who travell between CuracautÃn and Lonquimay stop at Piedra Santa to deposit food and other gifts in order to "feed" the princess.[1]