The document discusses the indigenous tribes that live in the Lower Omo Valley region of Ethiopia and Kenya, including their populations, traditions, and unique body art. It focuses on the Surma and Mursi tribes, whose nomadic lifestyle has led them to use their bodies as canvases for artistic designs incorporating plants, shells, and other found objects. Photographer Hans Silvester celebrates this tradition in his photos but worries that increasing civilization in the area may cause them to lose this cultural practice.