ナスカの地上絵
Perhaps the most famous geoglyphs are the Nazca lines in Peru. The cultural significance of these geoglyphs for their creators remains unclear, despite many hypotheses. The "Works of the Old Men" in Arabia, "stone-built structures that are far more numerous than (the) Nazca Lines, far more extensive in the area that they cover, and far older," have been described as geoglyphs by Amelia Sparavigna, a physics professor at Politecnico di Torino in Italy. The use of this term to describe these features is probably inaccurate, as recent research has shown that most were not constructed primarily as art, but were rather built to serve a range of purposes including burial sites and funerary customs, aiding in the trapping of migratory animals, and as cleared areas for camps, houses and animal enclosures.