Overview:In Northern Botswana lies the magnificent Okavango Delta one of the most extraordinary ecosystems in Africa. In the heart of the Kalahari Desert it's a wetland surrounded by parched and arid plains. The Delta and all the animals that live here, owe their existence to the Okavango River. It delivers life giving water to this flat, dry land and fills pools and swamps all year. Once a year rain falls 1000 miles away in Angola, creating an immense flood and spilling over to surrounding flood plains.