Namibia is a country in southern Africa on the Atlantic coast. Namibia is a member state of the United nations, the Southern African development Community, the African Union, and the Commonwealth of Nations. Namibia is known for its contrasting landscapes. Windhoek is the capital and largest city of Namibia. It is located in the Khomas region, in the central part of the country. It is major trade centre of sheep skins. The economy of Namibia is heavily dependent on the extraction and processing of minerals for export. Mining accounts for 20% of GDP. Rich alluvial diamond deposits make Namibia a primary source for gem-quality diamonds. Namibia is the fourth largest exporter of non fuel minerals in Africa. It is the world's fifth largest producer of uranium. The Namibian economy has modern market sector, which produces most of the country's wealth. Namibia is the only country in the world to specifically address conservation and protection of natural resources in their constitution.