This handout picture taken on January 3, 2017 and released by the Omo Forest Initiative shows elephants walking in the Omo Forest, a home for elephants, northeast of Africa's biggest city Lagos. - Omo, spreading across some 1,325 square kilometres (510 square miles) of southwestern Ogun state, was protected as a government reserve nearly a century ago. A UNESCO "biosphere reserve" of global importance, it is one of the last patches of pristine rainforest left in Nigeria. Nigeria's deforestation rates are among the highest in the world, according to the UN's Food and Agriculture Organization. (Photo by Handout / Omo Forest Initiative / AFP)