Close your eyes and picture a scene of Africa. What is it that you see? Is it the wide, open plains and the migrations of thousands of gazelle? Is it the pyramids at Giza, rising out of the desert like mountains? Or is it the rolling vineyards of Stellenbosch, glistening in the sunshine? Whatever your vision, it is unlikely that it is an island, for although there are hundreds, if not thousands, of such enclaves dotted in and around the continent, they are amongst Africa’s best kept secrets.