Why is it said that the Nazca Civilization was once a mighty civilization?

              The Nazca Civilization is one of the most splendid civilizations that can trace its origin, on the southern coast of Peru by the middle of the first millennium BC. They settled in the Nazca valley. The culture is noted for the geoglyphs made on the desert floor commonly known as Nazca lines. Nazca lines are earth drawings in the forms of animals and plants. They were made by removing the dark surface stones to expose the lighter ground below. Their exact purpose is disputed.

              The Nazca people were also masters of irrigation, and built a network of underground canals.

             Villages were the lifelines of the Nazca civilization. The houses of people were different according to their social class. The Nazca people enjoyed their social life and came together regularly for festivals.