7. This is the most photographed sand dune in the whole world. This is the vlei, meaning pan of dried out water.
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15. The Namibian economy rests on four pillars : mining, agriculture, fishery and tourism . Mining generates about one third of the gross domestic product and the biggest portion of the income in foreign currency . Namibia is very rich in natural resources with some minerals occurring exclusively under Namibian soil . Out of a great variety of minerals, mainly diamonds, uranium, gold, silver, zinc, copper, lead, tin, marble and granite as well as semi - precious stones are being mined . Almost half of the revenue brought in from the export of mining products comes from diamonds alone . The company Namdeb - which partially belongs to the government as well as the South African De Beers group - runs big mining operations in Oranjemund and in Elizabeth Bay near Lüderitz and produces over a million carats of diamonds annually . The second-most important economic sector is agriculture. It only generates a small part of the GDP, but more than half of all the jobs are to be found in agriculture: characterised by poor wages. The approximate 4000 farms belong mostly to white farmers who farm cattle and sheep extensively and export the meat to South Africa. Some farms are successfully producing ostrich meat, mainly for export. Due to the arid conditions in most parts of the country, crop-farming is found mainly in the Otavi/Tsumeb region, near Mariental at the Hardap Dam and - as subsistence farming - in the former Ovamboland region around Oshakati, where mainly millet and maize are being cultivated. The tourism sector also registers a considerable growth rate since the Namibian independence . The annual number of visitors is nearing the one - million mark . A third of the visitors come from South Africa . The Germans hold the second place, followed by the British, Italians and French . Part of the state revenue from tourism flows into nature conservation . Economy