Mentawai (also known as Mentawei and Mentawi) people, one of the indigenous tribes of the Indonesian ethnic group, are the native people of the Mentawai Islands (principally Siberut, Sipura, North Pagai and South Pagai) about 100 miles from West Sumatra province, Indonesia. They live a semi-nomadic hunter-gatherer lifestyle in the coastal and rainforest environments of the islands and are also one of the oldest tribes in Indonesia. The Mentawai population is estimated to be about 64,000. The Mentawai tribe is documented to have migrated from Nias – a northern island – to the Mentawai islands, living in an isolated life for centuries until they encountered the Dutch in 1621