The Germans kneel on the dusty clay floor, clap their hands and humbly bow their heads - as the protocol requires. This is their second visit to His Majesty Inyambo Yeta, the chief of the Lozi tribe in Zambia. They are hoping for some time for their request, at least a few minutes. Philipp Göltenboth and Ralph Kadel have travelled to Africa with a vision worth kneeling for: nothing less than the world's largest nature reserve. It is to be created across the borders of five African countries, the size of Italy. The project is being funded primarily by the German government and is expected to get started in a few weeks. Funds have to be coordinated, authorities and tribal chiefs have to be won over.