Nazca Lines

Stand still for a moment and feel the air. It is dry, almost weightless, and it carries a fine dust that settles on your lips. Underfoot, the ground is a crust of small reddish-brown stones, dark from long years under the desert sun. Look out across the plain and it seems empty, flat and quiet. Yet somewhere in this landscape, drawn at a scale you can barely grasp from the ground, are a monkey, a spider, a hummingbird, and hundreds of perfectly straight lines.

These are the Nazca Lines, a vast collection of geoglyphs on the coastal desert of southern Peru. A geoglyph is simply a design made on the ground itself. Here, the designs stretch across the pampa between the towns of Nasca and Palpa. Some are animals and plants. Others are long straight lines, spirals, zigzags and huge trapezoids. From where you stand, many of them are nearly invisible. That is the first surprise. The people who made them could not easily see their finished work.

So how were they made? The method is simpler than you might expect. The surface stones of this desert carry a dark coating of iron oxide, a kind of natural rust. Beneath them lies paler, yellowish ground. The makers removed the dark stones and piled them along the edges. That exposed a light-coloured strip below. No carving, no paint... just careful clearing, repeated over enormous distances.

The people behind most of these figures belonged to what archaeologists call the Nazca culture. They lived along the river valleys of this coast roughly two thousand years ago. They are known for their fine painted pottery and textiles, and for underground water channels that still carry water in parts of the region today. Many of the creatures on their pottery also appear here, on the desert floor. Earlier peoples of the Paracas tradition made geoglyphs too, mostly on the hillsides near Palpa.

Why have the lines survived for so long? The answer is the climate. This is one of the driest places on Earth. Rain here is rare. The wind near the ground is usually gentle, and the dark stones absorb heat, which creates a thin cushion of warm air above the surface. Together, these conditions have kept the shallow lines largely intact for many centuries. A design only a few centimetres deep has outlasted empires.

For a long time, the outside world paid little attention. Travellers on the ground saw only faint paths. Wider interest grew in the twentieth century, when aircraft began crossing the region and pilots noticed the shapes below. In the 1940s, the American historian Paul Kosok studied the lines and suggested that some of them pointed to the sunset on important days of the year. He called the pampa, in a famous phrase, the largest astronomy book in the world.

Kosok's work drew in a German-born mathematician named Maria Reiche. She stayed for the rest of her life. For decades she measured, mapped and swept the lines, often working alone in the heat. She argued for their protection when roads and farms threatened the plain. Locals remember her as a quiet, stubborn figure in the desert. Her efforts helped the lines and geoglyphs of Nasca and Palpa become a UNESCO World Heritage Site in 1994.

So what were the lines for? The honest answer is that nobody knows for certain. Reiche believed many of them formed an astronomical calendar. Other researchers have linked the lines to water, which is precious in this desert, and to rituals asking for rain. Some scholars think people walked along the lines in ceremonial processions. Several of the figures are drawn with a single continuous outline, as if made to be walked from start to finish.

You may also hear a more dramatic theory. In 1968, the Swiss writer Erich von Däniken suggested that the lines were landing strips for visitors from other worlds. The idea became very popular. Archaeologists reject it. The lines are shallow scratches in loose gravel, and no aircraft could land on them. One hillside figure, with a round head and large eyes, is nicknamed the Astronaut, but that name comes from modern imagination, not ancient intent.

Here is a detail many visitors miss. The Pan-American Highway, the long road that runs along this coast, was built straight through the pampa before the lines were well understood. It cuts across one of the figures, a lizard, and slices it apart. You can see the damage from the air. It is a quiet reminder of how fragile this place is, and how recently its value was recognised.

And the story is still unfolding. Researchers keep finding new figures. In recent years, a team from Yamagata University in Japan used artificial intelligence to scan aerial images and identified hundreds of previously unknown geoglyphs. Many are small, faint designs near old footpaths. One earlier find, revealed during conservation work around 2020, is a reclining cat on a hillside. After two thousand years, this desert still holds things no one has yet seen.

To take in the great figures, most visitors board a small plane from the airfield near Nasca town. The flight banks steeply left and right so both sides can look down. If you prefer to stay on the ground, a metal viewing tower stands beside the highway, giving a partial view of the tree and the hands. Natural hills nearby offer other glimpses. Walking on the lines themselves is forbidden. Even one footprint can last for centuries here.

Before you leave, look once more at the stones near your feet. Notice the dark surface and the paler earth that waits beneath it. That simple contrast is the whole secret. Someone, long ago, knelt on this same gravel and moved one stone, and then another, and then thousands more. Listen to the wind, feel the warmth rising from the ground, and carry that small image with you as you walk away.