Serengeti over 80 percent of the Serengeti. The southeastern area lies in the rain shadow of the Ngorongoro Conservation Area's highlands and is composed of shortgrass treeless plains with abundant small dicots. Soils are high in nutrients, overlying a shallow calcareous hardpan due to natrocarbonatite eruptions from Ol Doinyo Lengai. A gradient of soil depth northwestward across the plains results in changes in the herbaceous community and taller grass. About west, acacia woodlands appear suddenly and stretch west to Lake Victoria and north to the Loita Plains, north of the Maasai Mara National Reserve. The sixteen acacia species vary over this
Serengeti District Serengeti District Serengeti District is one of the seven districts of Mara Region of Tanzania. Its administrative centre is the town of Mugumu. It is home to part of the world-famous Serengeti National Park and contains one of the western gates to the park. According to the 2012 Tanzania National Census, the population of Serengeti District was 249,420. There are no paved roads connecting Serengeti District with the rest of the country. The unpaved trunk road T17 from Musoma to Arusha passes through the district from west to east. As of 2012, Serengeti District was administratively divided into 28 wards.