Dan Brockington challenges the broad vision of Africa's environment, history and society which drives conservation across the continent. He argues that this vision has been harmful, unjust and unnecessary in its effects on people at the Mkomazi Game Reserve in Tanzania * Do cattle destroy a wilderness? Many ecologists question whether herds degrade the environment. They ask whether a wilderness has to be devoid of people. They voice the concern for the rights of people excluded from the Reserve by politicians and judges. * Do the Trusts provide valid rehabilitation projects? The Hollywood film about the work at Mkomazi 'To Walk with Lions' is used for fund-raising. Hello! reports on London fund-raising parties. Books, films, television and magazines feed the search for a long-held dream of Africa. They gloss over what has happened to the people and their herds who have been moved out.