Another court case, brought by the state against 13 San accused of exceeding hunting quotas, has been withdrawn.
At the center of the dispute is the question whether the San are being moved from their ancestral land for purposes not of restoring the park's integrity as a nature reserve but rather to clear the way for diamond-prospecting companies.
The accusation has drawn a furious reaction, with a warning of legal action from De Beers, one of the diamond companies which has been involved in prospecting in the area.
The Survival International campaign has involved a publicity stunt in which a De Beers advertisement outside its new flagship store in London featuring super model Imam was pasted over with a picture of a San woman and the slogan: "Bushmen aren't forever."
In answer to the De Beers threat, Stephen Corry, director of Survival International, said: "Survival has been threatened many times by companies and governments which put profits before tribal peoples' rights. However, we have not the slightest intention of betraying the responsibility which, for many years, so many Gana an Gwi Bushmen have asked us to shoulder.
"The Bushmen have asked us to help them get their ancestral land back, and the campaign will now be stepped up until they are back living on it without fear of further harassment." The International Finance Corporation, part of the World Bank based in Washington, D.C., has also been drawn into the issue with accusations from Survival International that it funded diamond exploration in the park without consulting indigenous communities about the project.
Survival International has produced government maps on its Web site which it says are evidence of how the game reserve has been divided into concessions for mining companies.
But the Botswana government has strenuously denied that diamond concessions are the reason for the San's removal. It says exploration for minerals in the park began in the 1960s, but the only kimberlite (volcanic pipes often bearing diamonds) discovered was found to be not commercially viable.
Botswana President Festus Mogae has said: "There is neither any actual mining nor any plan for future mining inside the reserve."
The Botswana government has issued a statement that gives the assurance that "there is no mining or any plans for future mining anywhere inside the CKGR."
Destruction of Water Pump
Survival International accuses the Botswana authorities of harassment of the San, saying they have been "tortured, beaten up or arrested for supposedly over-hunting, or hunting without correct licenses." It charges that the harassment intensified last year, with the destruction of the Bushmen's water pump in the park and the draining of their existing water supplies into the desert, as well as the banning of hunting and gathering.
Corry said: "The Gana and the Gwi are amongst the last Bushmen who depend on hunting. Unless the Botswana government allows them back on their land and lifts the hunting ban, they will be responsible for the destruction of the Gana and the Gwi as peoples."
The Botswana government's statement says: "At no stage during the relocation exercise did government or its public officers involved in the relocation use force, coerce people residing in the game reserve, or threaten any of them in any way. The emphasis has always been persuasion and voluntary relocation."
In answer to the accusation of destroying the San's water pump and draining their water reserves, it says the few people remaining in the park made the provision of services unsustainable and unaffordable and these were therefore terminated.
The government said that many San had been "engaged in income-generating projects which enable them to live sustainable and self-reliant livelihoods, and not perpetually to depend on government handouts."