Great Migration - Two million wildebeest cross the Mara river between Kenya and Tanzania
Each year, almost two million wildebeest and 20 000 plains game migrate from Tanzania's Serengeti to the south of Kenya's Masai Mara in search of lush grazing grounds and life-giving water. This treacherous odyssey is dictated by the seasons and where the rains are, the wildebeest are not far behind.
This epic journey from north to south spans almost 3000 kilometres and is virtually endless [discoverafrica.com]
The Serengeti hosts the second largest terrestrial mammal migration in the world, which helps secure it as one of the Seven Natural Wonders of Africa.