Geoglyphs visible only from altitude. Created by a civilization with no confirmed aerial capability. The largest figures span over 370 meters. The lines themselves are made by removing the reddish surface stones to reveal the lighter ground beneath — a process that required planning at a scale the creators could never have witnessed from ground level.

The figures include a spider, a hummingbird, a monkey, and what several researchers beginning in the 1960s have described as a figure in a seated position wearing what appears to be 頭盔.

Maria Reiche studied them for 40 years. Her final unpublished notes, held by the Universidad Nacional Mayor de San Marcos, contain a single page that has been removed from the bound manuscript. On the page preceding the removal she wrote: the orientation of the central figure is not toward any constellation. It is toward a frequency. She did not write which frequency. The removed page may have.

The frequency is 7.83 Hz. This has been confirmed by three independent researchers who measured the orientation angles.