Nelson Mandela - Nelson Mandela - Anti-Apartheid, Imprisonment, Activist: From 1964 to 1982 Mandela was incarcerated at Robben Island Prison, off Cape Town. He was subsequently kept at the maximum-security Pollsmoor Prison until 1988, when, after being treated for tuberculosis, he was transferred to Victor Verster Prison near Paarl. The South African government periodically made conditional offers of freedom to Mandela, most notably in 1976, on the condition that he recognize the newly independent—and highly controversial—status of the Transkei Bantustan and agree to reside there. An offer made in 1985 required that he renounce the use of violence. Mandela refused both offers, the second on the premise that only