Nature’s Microworlds Part 2: Serengeti

Nature’s Microworlds Part 2: Serengeti
The Serengeti in East Africa is the textbook example of a vast grassland, site of annual migrations, with wildebeest, lion, elephant and crocodile as iconic species. Howver its geological situation is rather unique, a hard layer of petrified voltaic ash largely restricting growth to favor grasses, as do fires, but half of those are men-made by tribal herdsmen.