On 13 June 1964, Nelson Mandela, who later became South Africa's president, was taken to the maximum security prison on Robben Island off the coast of South Africa.
Mandela had led the military wing of the African National Congress party which was banned by the apartheid government.
He was sentenced to life imprisonment and spent 18 years on the island before being transferred to prison on the mainland.
He was freed on 11 February 1990 after serving 27 years behind bars.
Jen Dale uses BBC archive to tell this period of Mandela's life.
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(Picture: Nelson Mandela's cell on Robben Island, Credit: Getty/Dave Hogan)
