The largest human geoglyph - the Giant of the Atacama
On our way from Arica to Iquique, we visited one of the largest human geoglyphs - the Giant of the Atacama. Etched into the side of a solitary mountain, the 393 feet high human figure is one of many depictions of living creatures and geometric figures that can be found all across northern Chile and Peru.
The difference between a geoglyph and a petroglyph is that geoglyphs are designed on the ground by arranging or removing stones, gravel or earth, while petroglyphs are images carved into a rock surface.
Geoglyphs were first discovered when commercial airlines began flying across the Peruvian desert in the 1920's. Geoglyphs are are among archaeology's greatest mysteries.
Postcards from the Field: Climate Science from the Southeast Pacific