By the end of April, the wildebeest migration starts to spread west across the plains towards the Seronera area (central Serengeti) and Western Corridor (western Serengeti). The majority of the migration can normally be seen in the Seronera area (or just south of the Seronera, in the southern plains) from April to May. In June the majority of the migration can then be found in the Western Corridor. The Western Corridor is a narrow stretch of land that stretches from the west of Seronera to the Western Serengeti National Park border. The Western corridor is one of the areas where the migrating animals are forced to cross the Grumeti River. This normally happens when the animals leave the southern plains and begin heading north. Please note witnessing a crossing is a matter of luck.
