Micromacro Landscapes

LA6005: The Red dunes at the Sossuvlei are among the highest in the world with a relative height of about 375 metres above the Tsauchab river. The red colour on the Sossuvlai dunes is caused by iron oxide which covers the sand grains as a thin coating.This 'rusting' of iron implies that these sand grains must have been exposed to atmospheric conditions since their formation. It is believed that these sands blown by east winds originated from the continental interior (Kalahari).