After visiting Humberstone and Santa Laura, I directed the car up north and went to see the a petroglyph, el Gigante de Atacama. It is believed that some indigenous culture created it around 900 A.D. It is not clear what it depicts. Most scholars believe it to be a shaman.
El Gigante de Atacama: The Petroglyph in a Distance on the Western Slope of the Hill
El Gigante de Atacama: The Petroglyph
El Gigante de Atacama: Mars-like Landscape
El Gigante de Atacama: Foot Print of Giant Tracking Shoe — my Tracking Shoe ;.)
Heading back to Iquique: The World in the Rear Mirror