Nasca Lines

"Our idea," Reindel says, "is that they weren't meant as images to be seen anymore, but stages to be walked upon, to be used for religious ceremonies."

http://ngm.nationalgeographic.com/2010/03/nasca/hall-text

"As my footsteps continued around the curves of the spiral, it occurred to me that one of the most important functions of the "mysterious" Nasca lines is no mystery at all. The geoglyphs surely provided a kinetic, ritualistic reminder to the Nasca people that their fate was tied to their environment—its natural beauty, its ephemeral abundance, and its life-threatening austerity. You can read their reverence for nature, in times of plenty and in times of desperate want, in every line and curve they scratched onto the desert floor. When your feet inhabit their sacred space, even for a brief and humbling moment, you can feel it. "