History
Contrary to the popular belief that the lines and figures can only be seen with the aid of flight, they are visible from atop the surrounding foothills. They were first discovered by the Peruvian archaeologist Toribio Mejia Xesspe, who spotted them when hiking through the foothills in 1927. He discussed them at a conference in Lima in 1939.
Paul Kosok, a historian from Long Island University, is credited as the first scholar to seriously study the Nazca Lines. In the country in 1940-41 to study ancient irrigation systems, he flew over the lines and realized that one was in the shape of a bird. Another chance helped him see how lines converged at the winter solstice in the Southern Hemisphere. He began to study how the lines might have been created, as well as to try to determine their purpose. He was joined by Maria Reiche, a German mathematician and archaeologist to help figure out the purpose of the Nazca Lines. They proposed one of the earliest reasons for the existence of the figures: to be markers on the horizon to show where the sun and other celestial bodies rose. Archeologists, historians and mathematicians have all struggled with determining the purpose of the lines.
Determining how they were made has been easier than figuring why they were made. Scholars have theorized the Nazca people could have used simple tools and surveying equipment to construct the lines. Archaeological surveys have found wooden stakes in the ground at the end of some lines, which support this theory. One such stake was carbon-dated and was the basis for establishing the age of the design complex. The scholar Joe Nickell of the University of Kentucky has reproduced the figures by using tools and technology available to the Nazca people. The National Geographic called his work "remarkable in its exactness" when compared to the actual lines. With careful planning and simple technologies, a small team of people could recreate even the largest figures within days, without any aerial assistance.
On the ground, most of the lines are formed by a shallow trench with a depth of between 10 cm (3.9 in) and 15 cm (5.9 in). Such trenches were made by removing the reddish-brown iron oxide-coated pebbles that cover the surface of the Nazca desert. When this gravel is removed the light-colored earth which is exposed in the bottom of the trench produces lines which contrast sharply in color and tone with the surrounding land surface. This sublayer contains high amounts of lime which, with the morning mist, hardens to form a protective layer that shields the lines from winds, thereby preventing erosion.
The Nazca "drew" several hundred simple but huge curvilinear animal and human figures by this technique. In total, the earthwork project is huge and complex: the area encompassing the lines is nearly 500 square kilometres (190 sq mi), and the largest figures can span nearly 270 metres (890 ft). Some of the measurements for the figures include that the Hummingbird is 93 meters (310 ft) long, the Condor is 134 meters (440 ft), the Monkey is 93 meters (310 ft) by 58 meters (190 ft), and the Spider is 47 meters (150 ft). The extremely dry, windless, and constant climate of the Nazca region has preserved the lines well. The Nazca desert is one of the driest on Earth and maintains a temperature around 25 °C (77 °F) all year round. The lack of wind has helped keep the lines uncovered and visible to the present day.
The discovery of two new small figures was announced in early 2011 by a Japanese team from Yamagata University. One of these resembles a human head and is dated to the early period of Nazca culture or earlier and the other, undated, an animal. In March 2012 the university announced that a new research center would be opened at the site in September 2012 to study the area for the next 15 years.The team has been doing field work there since 2006 when it found about 100 new geoglyphs.
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