An old Kwegu man with a lip ornament made of aluminium. The Kwegu (known to the Karo as Muguji - a degoratory name meaning 'Working Ant') are the smallest tribe living on the banks the Omo River in southwest Ethiopia. Only 500 to 600 strong, they live under the protection of the powerful Nyag'atom people who are their neighbours. During the 20th century, they have been serfs of the Mursi, then of the Karo who mistreated them before they moved to Nyag'atom country