The Masai Mara (also spelled Maasai Mara) is a large park reserve in south-western Kenya, which is effectively the northern continuation of the Serengeti National Park game reserve in Tanzania. Named for the Maasai people (the traditional inhabitants of the area) and the Mara River which divides it, it is famous for its exceptional population of game and the annual migration of the wildebeest every July and August, a migration so immense it is called the Great Migration.