Inside the headquarters of Boko Haram’s former caliphate
Former captives describe brutal executions and militants celebrating suicide bombings
Recently returned people sit in a camp for the displaced in Gwoza, Borno State, northeast Nigeria. Photograph: Sally Hayden
On the edges of the Sambisa Forest, a vast, colonial-era game reserve believed to be hiding a combination of of Islamist militants, the region’s disappearing wildlife, and – locals will tell you – charms and magic, the Nigerian army is keeping watch.