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These were created by removing iron oxide pebbles to expose a wind-resistant layer of lime. One crackpot theory of these structures holds that they were gigantic looms used to create textile patterns like those of the nearby Paracas culture. German archaeologist Maria Reiche worked to preserve these features, which were endangered by the building of the Pan-American highway. (*) Airplanes are the best way to view these features, a fact which has caused noted crank Erich von Daniken to postulate that they were actually the runways of ancient spacefaring aliens. A monkey with a spiral tail is one example of these, but of greater interest to this tournament's editor are the so-called "Pelican," "Heron," and "Condor."  ► For 10 points, name this set of ancient glyphs that stretch for miles across arid regions of southern Peru.
These were created by removing iron oxide pebbles to expose a wind-resistant layer of lime.
Nazca lines