Rwanda, officially the Republic of Rwanda, is a landlocked country in East Africa. Its geography is dominated by mountains in the west and savanna in the southeast. The largest and most notable lakes are mainly in the western and northern regions of the country, and several volcanoes that form part of the Virunga volcanic chain are primarily in the northwest. The climate is considered tropical highland, with two rainy seasons and two dry seasons each year. Its capital and largest city is Kigali, located at the centre of the country, at 1,567 metres above sea level. Rwanda lies a few degrees south of the Equator in the Great Rift Valley of East Africa. Rwanda is bordered by Uganda to the north, Tanzania to the east, Burundi to the south, and the Democratic Republic of the Congo to the west.