Watch VoirFilms. The interior delta of the Niger River is a vast region inhabited by a million people. A unique social, political and communal organization has developed over this territory, giving a profound meaning to living together in relation to the movement of the river. The delta is fashioned as much by the immutable alternation of the seasons as by a state of perpetual metamorphosis. A single place can successively accommodate a spawning ground, then a fishing zone.