Namib dunes are the oldest in the world (approximately 30 million years old) and spread over 32 500 square kilometres (300 km along the coast and up to 140 km into the inland).
Dunes have regular and irregular
Namib dunes are the oldest in the world (approximately 30 million years old) and spread over 32 500 square kilometres (300 km along the coast and up to 140 km into the inland).
Dunes have regular and irregular
forms. The sand comes as a deposit of rivers into the ocean and than blown
onshore and further inland.
Formation of the dunes: obstacle on the way (example roughness of soil) where force of the wind is broken and sand kept on the spot. Sand falls on the angle of 30% and the largest amoun