The second of a three-part journey to the birthplace of humanity and a natural wonder of the world - the Great Rift Valley of Africa.

The Serengeti plains, unsurpassed in their grandeur and beauty, were formed from clouds of ash drifting over the Rift Valley. Herds of gazelle, zebra and wildebeest run the gauntlet of wild dogs, cheetahs and lions, creating the greatest wildlife spectacle on earth. Here, too, the Masai people come to graze their cattle.
Rain, which brings life to the plains, collects in the Rift Valley to form lakes. Some are shallow, others so deep they become oceans in miniature with unique coral reef-like communities. A few lakes have been enriched with volcanic minerals to form crusts of burning soda and a home for flamingoes, which thrive in their millions in this most inhospitable landscape.