Where do people perform an annual ritual, involving dance and masks made of mud, to honor their river god?

In the central plateau region of Mali, in West Africa there, Dogon are an ethnic group living They are best known for their religious traditions, their mask dances, It was because of his solitary state that the first son of God acted as he did. There is every village may have their own way of performing the dama rituals.

C.east asiais the answer.