Last of two parts We are in the Kunene wilderness region of northwest Namibia, with former F-1 star Ukyo Katayama, an NHK documentary team, a bunch of bloody-minded camels, several battered off-road vehicles, about 50 local tribesmen and Namibian wildlife artist Blythe Loutit, founder of The Save the Rhino Trust (SRT). We're looking for rhinos.

But not any old rhinos. Namibia is home to almost 30 percent of Africa's desperately endangered black rhino population. Namibia is also home to 97 percent of the uniquely adapted subspecies of black rhino, known as the desert rhino (Diceros bicornis bicornis). Kunene is the heart of their territory; covering tens of thousands of square kilometers of rugged mountains, boulder plains, sun-scorched grasslands and ephemeral river beds.

The adjective for Kunene is "harsh." This isn't at first glance the sort of place that one could imagine a rhino wanting to live in.