Bossou is a town and sub-prefecture in the Lola Prefecture in the Nzérékoré Region of south-eastern Guinea. Much of the sub prefecture consists of the Mount Nimba Strict Nature Reserve. The Bossou Hills Reserve situated at the south-eastern limit of the city, which is famous for its chimpanzees habituated to humans, and make Bossou Hills the b…Bossou is a town and sub-prefecture in the Lola Prefecture in the Nzérékoré Region of south-eastern Guinea. Much of the sub prefecture consists of the Mount Nimba Strict Nature Reserve. The Bossou Hills Reserve situated at the south-eastern limit of the city, which is famous for its chimpanzees habituated to humans, and make Bossou Hills the best chimpanzee observer place in Western Africa.