One desert, several kinds of design
People often picture the Nazca geoglyphs as a set of giant animals. In fact the animals are a small minority. Most of the designs on the plain are geometric, and a visitor flying over the area sees far more lines, bands and cleared areas than creatures. It is also important to say what is well established: the designs were made by people, mostly in the centuries around the start of the Common Era, by clearing the dark surface stones to show the paler ground. Why they were made is still debated.
The area usually called the Nazca Pampa is a high, flat desert plain between river valleys in southern Peru, with the Andean foothills to the east and the coastal ranges to the west. Individual sectors have local names, and the designs are not spread evenly across them.
Straight lines
The straight lines are the most numerous type. They are thin, often only a few tens of centimetres to a few metres wide, and they run for distances ranging from a few tens of metres to several kilometres. Many continue in the same direction over low rises and shallow gullies, which has impressed generations of observers because the makers were working without modern instruments.
Lines sometimes cross older lines or run over figures, which shows the plain was used repeatedly over a long time rather than planned in one go. Researchers have also noted places where several lines radiate from a single point, often a low rise or a small cairn. These are often called line centres, and dozens have been recorded.
Trapezoids, triangles and rectangles
Cleared areas make up another large group. The best known are trapezoids, long wedge-shaped bands that narrow toward one end, some of them hundreds of metres long. Triangles and rectangles are also common. These shapes are not outlines but wide, flat surfaces from which the dark stones were removed.
They are frequently found close to lines, and some lines lead into them. That pattern has fed the ideas that they marked ceremonial spaces or places where people gathered, an idea connected with the debate summarized in the Nazca water ritual theory. It remains a proposal rather than a conclusion.
Spirals, zigzags and meanders
A third category consists of curves: single and double spirals, zigzags, and long meandering lines that double back on themselves. Some of these meanders are drawn as a single continuous path, the kind of design that would make sense if people walked along it. Stepped patterns and wave-like forms also appear. Several of these motifs are also seen on Nazca pottery and textiles, suggesting that the same ideas and visual vocabulary were shared across media.
Animals, plants and human figures
The figurative designs number in the dozens. They include:
- birds such as a hummingbird, a condor and a pelican-like figure;
- a monkey with a spiralled tail, a spider, a lizard, a dog and a fish;
- plants such as a tree and flower-like shapes;
- a human-like figure, usually found on a hillside rather than on the flat plain.
Most of the animal figures are drawn in outline, with a single line that rarely crosses itself. Some are filled with cleared ground. Their sizes vary widely, from about a dozen metres to well over a hundred. Each one is considered in more detail through the Nazca animal figures, and the interpretation of motifs belongs to the study of Nazca iconography.
Where the shapes lie
The distribution has several patterns that help interpretation:
- Flat plain. The majority of lines, trapezoids and large figures lie on the open plain, where the surface is level and the stony cover is thick.
- Close to valleys. The designs tend to occupy the dry plateaus between valleys, not the valley floors where people lived and farmed. The links between the plain and the settlements are an important question in research.
- Hillsides. Some figures, notably human-like ones, are placed on slopes. Around Palpa, a group of such hillside geoglyphs is older than the Nazca period and is discussed under Palpa hillside geoglyphs.
Aerial survey, satellite images and drones have been used to map these distributions. As with LiDAR survey in other regions, such tools reveal faint designs that are almost invisible at ground level. In recent years researchers have reported hundreds of additional small figures, mostly in the countryside around the established core area. These newer finds tend to be smaller and seem to date from earlier periods than the large animals.
Why the variety matters
The range of shapes is a reminder that the geoglyphs were not a single project. Straight lines, cleared areas and drawn figures differ in how they were made, how they were used, and probably when. The different types may have had different purposes, which may help explain why no single theory fits everything. For readers, the useful point is to avoid treating the entire plain as a gallery of animal pictures. It is better seen as a landscape that was marked in many ways over many generations by the people who lived along its edges.