A lion roars and shows his sharp teeth. Masai Mara (or Massai Mara and Maasai Mara) is a national nature reserve in southwest Kenya in the Serengeti region, and is actually a continuation of the Serengeti National Park. So called because the Maasai tribe inhabiting the area, and the Mara river crossing. It is famous for its unique fauna. It occupies an area of 1,510 km ² in the vicinity of the Great Rift Valley. Its surface was reduced from 1672 km ² it had in 1984.1 It comprises three sections: Mara Triangle, Musiara (where the Swamp Musiara) and Sekenani.2 Most of the territory is savannah dotted with acacia distinctive. Wildlife tends to be concentrated in the western part of the valley, and that access to water is easier. The eastern border of the park is about 224 km from Nairobi.