Gorga is a form of artistic decoration found in the culture of Batak Toba in North Sumatra, Indonesia. The Gorga motif is in the shape of flourishes and undulations. The motif is either painted or carved onto wood using three colors: white, red, black; each corresponds with different realms in the Batak Toba cosmology. Gorga motif is often found in Batak Toba architecture e.g. a Batak Toba house or objects e.g. music instruments. They are meant to protect the building or object from spiritual harm e.g. evil spirits sent from a neighboring villages.