The Nazca Lines are a series of geoglyphs located in the Nazca Desert in southern Peru. In the Yu-Gi-Oh! 5D's anime, they were formed after the Earthbound Immortals got sealed in the Earth. The seven lines associated with the Earthbound Immortals also appear on the arms of the Dark Signers as dark marks, with the exception of Rex Goodwin, who had the condor mark on his back.