Subscribe and 🔔 to the BBC 👉 https://bit.ly/BBCYouTubeSub Watch the BBC first on iPlayer 👉 https://bbc.in/iPlayer-Home A gorilla crossing is a tense and dangerous process for Chimanuka and his family. Gordon Buchanan realises a lifelong dream by gaining the trust of a family of rare Grauer's gorillas, the largest primates on Earth. In the dangerous forests of the Democratic Republic of Congo,