Earlier this month, a mass grave containing 25 bodies was discovered in Malawi. Investigators there are still working to find out exactly what happened to these people. But the government believes they were Ethiopian and that it is possible that they were being trafficked. The possibility has put a spotlight on migration routes from north to southern Africa and the conditions people face along the way. People have been making similar journeys for many years though. So why are people migrating? And what is it like for those on the move? #AfricaDaily