Kigali of what is now Rwanda were the Twa, a group of aboriginal pygmy hunter-gatherers who settled the area between 8000 and 3000 BC and remain in the country today. They were followed between 700 BC and 1500 AD by a number of Bantu groups, including the Hutu and Tutsi, who began clearing forests for agriculture. According to oral history the Kingdom of Rwanda was founded in the 14th century on the shores of Lake Muhazi, around east of modern Kigali. At that time Rwanda was a small state in a loose confederation with larger and more powerful neighbours, Bugesera and
Kigali three administrative districts—Nyarugenge, which lies in the south west, Kicukiro in the south east, and Gasabo, which occupies the northern half of the city's territory. Kigali lies in a region of rolling hills, with a series of valleys and ridges joined by steep slopes. Kigali lies between the two mountains of Mount Kigali and Mount Jali, both of which have altitudes over , while the lowest areas of the city have an altitude of . Geologically, the city lies in a granitic and metasedimentary region, with lateritic soils on the hills and alluvial soils in the valleys. The Nyabarongo River,