The sand dunes of Namibia in southwest Africa's Namib Desert are strikingly beautiful - and are some of the oldest in the world. They are also some of the largest, and can reach a staggering 1,000 feet tall.

The sand dunes of Namibia in southwest Africa’s Namib Desert are strikingly beautiful – and are some of the oldest in the world. They are also some of the largest, and can reach a staggering 1,000 feet tall.

The sand dunes of Namibia in southwest Africa’s Namib Desert are strikingly beautiful – and are some of the oldest in the world. They are also some of the largest, and can reach a staggering 1,000 feet tall.