Claver Ntoyinkima, a native park ranger, shares the secrets of Nyungwe National Park in Rwanda as he guides us through the forest, one of the most biodiverse places in the world. Twenty-five years after the devastation of the Rwandan Civil War, the park is now one of the best-conserved montane rainforests in Central Africa. As Claver walks through the forest we uncover the origins of his conservation values and the history of an ecosystem that survived one of Rwanda's darkest periods.