 The Ngong Hills, from the westside slopes, overlook the Great Rift Valley dropping over 4,000 feet below, where nomadic Maasai live., the population of Ngong is 102,323, and the elevation of Ngong town is 1,961 meters in altitude, but the altitude of the hills is about 2,460 meters above sea level.Ngong was the central town of Ngong division while Kajiado County was a district.