What is the reason for the formation of the Namib desert?

The main reason for the emergence of the Namib Desert is the cold Bengal Current. This current forms off the southern coast of Africa, near the Cape of Good Hope, and then flows northward close to the coast. Under its influence, the air becomes dry and cold, rain clouds scatter over the coast, and the lack of moisture, in turn, leads to the devastation of coastal territories. The second and less important factor is the high-altitude plateau in the east of Namib, which fences the desert from rain clouds in the east.