About Sao Tome and Principe : The Sao Tome and Principe is a tiny volcanic islands. It lies in the Gulf of Guinea about 240 km off the West Africa. It is discovered by the Portuguese in the late 15th century. The 'Sao Tome' is covered by a dense forests with mountains. The 'Principe' with jagged mountains. The Pedras Tinhosas and Rolas are the other islands in the Republic. Most of the population lives in Sao Tome.