 The authorities in Mozambique say they will designate the largest piece of rainforest in southern Africa a conservation area. The Mabu Forest in northern Mozambique is what's known as a sky island, perched on top of a mountain and surrounded by lowlands. Its unique location means that many of its inhabitants have evolved in isolation. In the 20 years since it was discovered on satellite pictures, expeditions to the forest have found new species of chameleons, snakes, bats and butterflies. Professor Ara Monadjem is from the University of Eswatini.