A 45-minute drive south of Yaoundé, Mefou is run by Ape Action Africa, an organisation established to protect primates in Cameroon. Well-informed guides will show you gorillas, drills, chimps and mandrills living in beautiful natural surrounds, all rescued from the bushmeat trade. A taxi to the park from Yaoundé costs around CFA50,000; call ahead if it's rainy to check if the park's open.