Description : Indigenous groups such as the the Manobos of Arakan Valley have fought hard to regain their ancestral land from a big political warlord who converted their land into cattle farms. In the 1970s, the Manobos engaged in a bloody armed struggle to protect their land...NGOS and the local Catholic parish have been helping the Manobos of Arakan to regain their ancestral land rights. Mindanao, Philippines.