Rivers of Sand (1974) 1974, Documentary, United States Rivers of Sand (1974) Duration: 1H23M Description: The people portrayed in this film are called Hamar. They dwell in the thorny scrubland of southwestern Ethiopia. The film is an attempt to disclose not only the activities of the Hamar, but also the effect on mood and behavior, of….. Trailer ↗ United States 1974 Documentary