In March 1999, safari guide Mark Ross and 14 tourists were kidnapped in Uganda by Hutu rebels. These "Interahamwe" were involved in the slaughter of hundreds of thousands of Tutsis in the 1994 Rwandan genocide - the massacres ended when the rebels were driven into exile in the Congo. The Interahamwe forced the hostages to march for hours through impenetrable jungle, eventually splitting them into two groups. Marks group managed to negotiate a safe release at the Congo border, but the other group suffered a terrible fate - they were hacked to death by rebel machetes. To this day, Mark finds it difficult to comprehend what happened - and the Interahamwe are still fighting to return to Rwanda.