Forgotten photos show how Kenyan archaeologists unearthed secrets of their own country

Exhibitions in UK and Africa rewrite history by celebrating discoveries of overlooked black excavators in colonial era

The photographs are rare, the subject choice unusual, but what the photographer captured was a common sight in the early 20th century: a team of colonised people, hard at work under a hot sun, excavating an ancient monument.

Today, without these photos, taken in Kenya in the 1940s and 50s, there would be scarcely any evidence that African Kenyans were present at archaeological digs. Their contributions and priceless finds were credited to their European bosses - and their important role in unearthing the history of their own continent has been all but forgotten.