The Republic of Rwanda is a landlocked country in East Africa. Known as the “Land of a Thousand Hills” for its high elevation and rolling terrain, 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. The city of Kigali is the capital and largest city; Kinyarwanda is the official language; and the Rwandan Franc is the national currency.