The book consists 27 research papers on religious culture of Arunachal Pradesh including tribal culture with emphasis on spirits and deities, sacred specialists, and sacred rituals etc. The Theravada and Mahayana Buddhism as practised by some Arunachali tribes are presented in a historical setting along with Brahminical culture in the foothills. This is the first such study of religious history of Arunachal Pradesh and their interaction with the people of Assam, Tibet and Myanmar through the ages.