The Torajan are an Austronesian ethnic group indigenous to a mountainous region of South Sulawesi, Indonesia. Their population is approximately 1,100,000, of whom 450,000 live in the regencies of Tana Toraja and Toraja Utara. Others live in adjacent regencies of South Selawesi, and in the Mamasa Regency of West Sulawesi Province to the west. Most of the population is Christian, and others are Muslim or have local animist beliefs known as aluk. The Indonesian government has recognised this animistic belief as Aluk To Dolo as well as Hindu Alukta, namely, a form of Hinduism in Indonesia.