What is coi coi-vilu?

Coi Coi-Vilu is a mythical creature in Mapuche (indigenous people of Chile and Argentina) mythology. It is believed to be a serpent-like creature or water dragon that resides in bodies of water, particularly in rivers and lakes. Coi Coi-Vilu is depicted with a long and serpentine body, with a crest on its head and sharp fangs. In Mapuche belief, Coi Coi-Vilu is considered a powerful and potentially dangerous creature. It is often associated with floods and droughts and is revered as a creature that holds the power of life and death over humans. To avoid the wrath of Coi Coi-Vilu, Mapuche people pay homage to it through offerings and rituals.