Overview: Alex pitches in as a lifeguard on a tubing run in northern South Africa, and scores an open-top, day-to-night safari into Kruger National Park where hippos and rhinos roam freely. Jumping over to Tanzania, Alex enjoys the multicultural crossroads of Dar Es Salaam, then heads to Arusha and the savannahs beyond, where a Masai warrior brings him to his home village.