For six years Dr Shirley Strum lived sixty miles north of Nairobi deep in the Great African Rift Valley. Subscribe to Our World: https://bit.ly/3xnPuGL

Her neighbours were the Pumphouse Gang, an extraordinary troup of about 100 baboons. Dr Strum has spent over 6,000 hours with the troop and has come to understand baboon 'language' and gestures as no one ever has before.

This film was first broadcast: 03 Jul 1981

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