Bangka-Bangka burial rites were commonly practiced in Mamasa in the past, but now, this cultural tradition is in danger of extinction. The Bangka-Bangka grave remains are also almost going extinct. Despite this, it is important to investigate to what extent religious beliefs and social stratification exert influence upon the Bangka-Bangka Burial rites as seen from grave styles in Mamasa, Eastern Indonesia. This study aims to investigate factors which influences Bangka-Bangka burial rites. An archaeological survey (field survey) along with interviews with local community members was used to collect data. Findings show that Bangka-Bangka burial rites in Mamasa are influenced by cosmological beliefs, shaped by rules of Aluk To Dolo and royal family stratification. The outcomes of this study will be compared with the results of other analyses of wood coffin burial traditions recorded at archaeological sites in nearby Toraja District, and similar modes of wooden coffin burial in other parts of Southeast Asia.