Namib-Naukluft National Park

Listen for a moment. There is almost nothing to hear. Perhaps the wind moving sand across the top of a dune, a soft hiss like pouring sugar. Perhaps the click of a beetle's legs on a grain-covered slope. The air is dry enough that you can feel it on your lips. And the light, especially early or late in the day, turns everything around you into shades of apricot, rust and deep red.

This is Namib-Naukluft National Park, one of the largest protected areas in Africa. It stretches from the gravel plains and mountains inland all the way to the cold Atlantic coast. If you have driven here from Maltahöhe, you have already crossed part of the transition. The farmland and open thornveld of the interior gave way to wider, emptier country, and then the red dunes began to rise on the horizon.

The desert that gives the park its name, the Namib, is often described as the oldest desert on Earth. Scientists estimate that arid or semi-arid conditions have existed here for at least tens of millions of years. That age matters. Plants and animals have had an enormous span of time to adapt to almost no rain. Many species here live nowhere else on the planet, shaped by this one unusual place.

So why is the sand red? The colour comes from iron oxide, a thin coating on each grain, much like rust on old metal. Older dunes have had more time to oxidise, so they tend to glow deeper and darker. Pick up a handful and look closely. The grains are fine and rounded, polished by wind over a very long time. Much of this sand is thought to have travelled from far inland, carried by rivers to the coast and then blown back across the land.

The most visited part of the park lies around Sossusvlei. A vlei is an Afrikaans word for a shallow pan or depression that can hold water. Here, a clay pan sits enclosed by some of the tallest dunes in the world. In most years it stays dry and cracked. But in rare years of good rain, the river that usually dies in the sand pushes far enough to fill the pan. For a short time, a lake appears in the middle of the desert.

Nearby is Deadvlei, and this is the image many people carry home. A white clay floor. Black, twisted trunks of camel thorn trees, standing exactly where they died. Behind them, an orange dune rises against a hard blue sky. These trees are believed to have died many centuries ago, when shifting dunes cut off their water. The air is so dry that the wood has not decayed. They have simply stood here, burnt dark by the sun, ever since.

Here is something most visitors walk past without noticing. The Namib receives very little rain, but it does receive fog. A cold ocean current, the Benguela, flows north along the coast. When moist air meets it, fog forms and rolls inland on certain mornings. Life here depends on that fog. Some tenebrionid beetles, a family of darkling beetles, climb to the crest of a dune and tilt their bodies into the mist. Droplets collect on their backs and run down towards their mouths.

Larger animals have their own tricks. The oryx, a tall antelope with long straight horns, is the animal you are most likely to see standing alone on the plains. It can survive long periods without drinking. Its body can tolerate a rise in temperature that would harm most mammals, and it cools the blood flowing to its brain. Watch the grassland edges too. You may also see springbok, ostrich, and, with luck, a jackal trotting along a dry riverbed.

A second surprise lies close to the main entrance at Sesriem. Sesriem Canyon is a narrow gorge cut into layers of sediment by the Tsauchab River. The name is usually explained as coming from the Afrikaans for six leather straps. Early travellers are said to have tied six of them together to lower a bucket far enough to reach water below. Walk down into the canyon, and the temperature drops. The walls close in, and the sounds of the open desert fade away.

The second half of the park's name belongs to the Naukluft Mountains, a rugged block of rock rising from the plains to the north and east. This section feels completely different. Instead of soft dunes, you find steep gorges, folded rock layers and clear pools in the rare places where water reaches the surface. The mountains are a refuge for Hartmann's mountain zebra, a sure-footed species adapted to rocky slopes. Hiking trails here suit people who want silence and serious walking.

Further west, toward the coast, the park holds yet another landscape. Gravel plains stretch out, scattered with lichens that brighten when the fog arrives. Here grows the welwitschia, one of the strangest plants anywhere. It produces only two leaves in its whole life. Those leaves keep growing, slowly splitting and curling across the ground like tangled ribbons. Some individual plants are believed to be many hundreds of years old, possibly far older.

As you travel through the grassy edges of the park, look out for something odd. Across the plains, you may see bare circular patches surrounded by rings of taller grass. These are known as fairy circles. Local stories have offered many explanations over the years. Scientists still debate the cause. Some point to termites below the ground. Others point to plants competing for scarce water. Nobody has settled the question completely, which makes the circles even more interesting to stand beside.

Human presence here is light, but it is real. People have moved through this region for a very long time, following water and game. Today, most visitors come for a few hours at sunrise or sunset, when the dunes cast long shadows and their colours are richest. Climbing a dune is harder than it looks. Each step sinks and slides back. But the view from a ridge, looking over wave after wave of sand, rewards the effort.

Before you leave, stop somewhere quiet. Turn off the engine, or step away from the group. Look at the line where a dune's sunlit side meets its shadow, sharp as a knife edge. Notice how the wind is slowly moving that edge, grain by grain, while you watch. This desert has been changing shape like this for millions of years... and it will still be doing so long after you have driven back toward Maltahöhe.