Namib Sand Sea (Namibia) is the only coastal desert in the world that includes extensive dune fields influenced by fog. Covering an area of over three million hectares and a buffer zone of 899,500 hectares, the site is composed of two dune systems, an ancient semi-consolidated one overlain by a younger active one. The desert dunes are formed by the transportation of materials thousands of kilometres from the hinterland, that are carried by river, ocean current and wind. It features gravel plains, coastal flats, rocky hills, inselbergs within the sand sea, a coastal lagoon and ephemeral rivers, resulting in a landscape of exceptional beauty. Fog is the primary source of water in the site, accounting for a unique environment in which endemic invertebrates, reptiles and mammals adapt to an ever-changing variety of microhabitats and ecological niches. (UNESCOPRESS 21 June 2013)Namibia's other World Heritage Site is Twyfelfontein, which got inscribed on the World Heritage List in 2007.
To be included on the World Heritage List, sites must be of outstanding universal value and meet at least one out of ten selection criteria. These criteria are explained in the "Operational Guidelines for the Implementation of the World Heritage Convention". Please visit the UNESCO World Heritage Centre's website for more information about the critiria for selection.
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