Kaharingan religion
Kaharingan is an indigenous and animistic folk religion professed by the Dayak people in Kalimantan, particularly the Central area. This belief system has a concept of a many deities and often one supreme deity. Ancestor worship and the belief in many supernatural beings is also common. Including some Hindu-Javanese influences, Kaharingan is registered as a form of Hinduism as the Indonesian government recognizes only six official religions (Islam, Protestantism, Roman Catholicism, Hinduism, Buddhism and Confucianism respectively). The main festival of this religion is the Tiwah festival, lasting for thirty days with the sacrifice of many animals like buffaloes, pigs, cows and chickens, as offerings to the spirits and deities.