The Republic of Rwanda is part of the African Great Lakes Region. The region straddles the east-central part of Africa. A chain of lakes is found in the region, ranging from Lakes Victoria, Albert, Edward, Kivu and Tanganyika; hence the name African Great Lakes Region. It covers the countries of Burundi, the Democratic Republic of the Congo, Kenya, Rwanda, Tanzania and Uganda. The region's relief is moderate and influenced by tectonic and volcanic activity. Parts of the region are heavily forested, as is the case with the Congo-basin, while the others in the east are grassland savannahs. The volcanic soil in parts of the region makes it ideal for agriculture and therefore conducive to human habitation. Indeed parts of the region, particularly Burundi and Rwanda, have high population densities and a concomitant problem of land shortage. Besides the rich arable soil the countries of this region are also well endowed with a variety of precious mineral resources, such as gold, diamonds, uranium, copper, emeralds and cobalt.