The river crossings of the Great Migration in Kenya and Tanzania, East Africa, are one of the most spectacular and treacherous events in the natural world. Thousands of groups of wilder-beast walk single file, towards the river, forming lines across the landscape. These groups converge and then join up to form larger groups. By the time they reach the river bank, they are a huge, loud mass of anxious energy. It can take hours for the leaders to decide on the precise place and time of the crossing, but once one wilder-beast jumps in, they all follow in a chaotic and extraordinary dash to the other side. Crocodiles await and the turbulent waters of the river are too much for the weak and the young, but the wilder-beast must reach the lush pastures ahead, or they will all perish.
The Great Migration
