A Nyangatom woman wears multiple layers of beads in necklaces, an elaborately beaded calfskin skirt and metal bracelets, amulets and anklets. She is standing beside a temporary beehive construction of sticks, grass and leaves built to provide shade for her goats. The Nyangatom or Bume are a Nilotic tribe of semi-nomadic pastoralists who live along the banks of the Omo River in south-western Ethiopia.