Diamond and gold may well be South Africa's most valued reserves, but this beautiful country's most invaluable treasure is its wildlife! True to its title of 'Rainbow Nation', South Africa boasts of a biogeography as diverse and complex as its multicultural ethnicity: from the savanna forests of Kruger National Park at one end, home to the Big Five; to the unique Cape Floral Kingdom at the other extreme, home to some of the country's rarest endemics. The topographically diverse nation has…