When coming up with an itinerary for a trip to a different country, it's usually the first instinct to look at the popular tourist attractions. Among the popular tourist attractions are the United Nations Educational, Scientific and Cultural Organization (UNESCO) World Heritage Sites located in a certain country.

Those visiting Namibia, for example, have two that they can look into. One is the cultural site known as Twyfelfontein Heritage Site. The other is a natural site known as Namib Sand Sea.

Here is what you need to know about both UNESCO World Heritage Site.

Namib Sand Sea

A part of the UNESCO World Heritage Site since 2013, the Namib Sand Sea is described as "a vast area of spectacular sand dunes, featuring two super-imposed systems – an ancient (semi-consolidated) one below, with an active one above." It is likewise "the only coastal desert in the world that includes extensive dune fields influenced by fog," according to the UNESCO World Heritage Convention.   

It covers an area of 3,077,700 hectares, as well as a buffer zone of 899,500 hectares. While it is predominantly a dessert, it is actually home to a wide range of animals and plants. 

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Twyfelfontein Heritage Site

The second World Heritage Site, Twyfelfontein Heritage Site, is actually Namibia's first to enter the World Heritage Site list. It has been a UNESCO World Heritage Site since 2007. It is home to one of the largest concentrations of rock petroglyphs in the whole continent. 

Located in Damaraland, it is home to the 2,500 different rock engravings. A good number of these rock engravings are said to have been carved more than 6,000 years old by the San people. 

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