Serengeti National Park 

The annual migration of two million wildebeests plus hundreds of thousands of gazelles and zebras – followed by their predators in their search of pasture and water – in the vast plains of
Serengeti National Park, which covers 1.5 million hectares of savannah, is one of the most impressive natural spectacles in the world.

Because just one river (Mara) flows perennially through the Park, scarcity of surface water for the animals during dry years is a major potential danger to the Park's integrity.

The park has a high level of biological variety, with at least four globally threatened or endangered animal species present: black rhinoceros, elephant, wild dog, and cheetah.

The Serengeti National Park was named a UNESCO World Heritage Site in 1981.

(Source UNESCO)