The Nazca Lines

Lore & Background

He was joined by archaeologist Richard P. Schaedel and Maria Reiche, a German mathematician and archaeologist, who proposed that the figures were designed as astronomical markers on the horizon to show where the sun and other celestial bodies rose on significant dates. Scholars differ in interpreting the purpose of the designs, but in general, they ascribe religious significance to them. Determining how they were made has been easier than determining why they were made. Archaeological surveys have found wooden stakes in the ground at the end of some lines, supporting the theory that the Nazca people used simple tools and surveying equipment. Scientific American characterized Nickell's work as 'remarkable in its exactness' when compared to the existing lines.

Reader's Guide

They were created by removing the top layer of reddish-brown ferric oxide–coated pebbles to reveal a yellow-grey subsoil, forming shallow trenches 10 to 15 cm deep. In the 21st century, several hundred new figures have been found with the use of drones, and archaeologists believe that there are more to be found. The legacy of the Nazca Lines continues to evolve as new technologies reveal more about their extent and the people who created them.

Did You Know?

• The lines are typically 10 to 15 cm (4–6 in) deep.
• More than half of the lines are slightly more than 33 cm (13 in) wide.

Craft & Physical Scale

The technique was deceptively simple. Workers stripped away the top layer of reddish-brown pebbles coated in ferric oxide, exposing a pale yellow-grey clay subsoil beneath. This sub-layer is rich in lime, which, when touched by the region's morning mist, hardens into a natural sealant that protects the exposed surface from wind erosion. Widths vary dramatically—most lines sit just over 33 centimeters, but some narrow to 30 centimeters while others swell to nearly 1.8 meters.

Discovery & Early Scholarly Attention

For centuries the lines existed in the peripheral awareness of locals without attracting serious academic scrutiny. It was not until the twentieth century that the geoglyphs entered modern scholarship. He also noticed that certain lines converged precisely on the horizon at the Southern Hemisphere's winter solstice. Kosok recruited archaeologist Richard Schaedel and German mathematician Maria Reiche into a collaborative effort, and together they advanced the theory that the designs functioned as astronomical markers tracking the sun and other celestial bodies on significant dates.

Purpose, Debate & the Ancient-Astronaut Question

What the Nazca people intended remains one of archaeology's enduring puzzles. Most scholars lean toward a religious or ceremonial function, yet no single explanation has achieved consensus. The astronomical-marker hypothesis, championed by Kosok, Schaedel, and Reiche, gained physical support when surveys uncovered wooden stakes driven into the ground at line endpoints; one such stake was carbon-dated and became a key anchor for establishing the complex's age. The question of how the lines were built, by contrast, was effectively settled in the early twenty-first century. American investigator Joe Nickell, working with only the tools and surveying methods available to the Nazca, reproduced the figures in a matter of days with a small team and no aerial assistance. Scientific American praised Nickell's recreation as "remarkable in its exactness" relative to the originals, demonstrating that extraordinary scale does not require extraordinary technology.

Preservation, Threats & Ongoing Discovery

The very conditions that made the plateau ideal for drawing—extreme aridity, near-total absence of wind, and a remarkably stable climate—have also served as the lines' greatest preservative. For two millennia the designs have endured with minimal alteration, though rare weather events can temporarily shift their appearance. In 1994 UNESCO recognized this fragility and significance by designating the geoglyphs a World Heritage Site. On the discovery front, the story is far from over.