Cahuachi - Adobe Pyramid from Nasca Civilization

Scholars believe that Cahuachi, as the ceremonial center of the Nasca people, was much larger than originally thought and more sparsely populated on a permanent basis.  The city had pyramids, like the one depicted here, and would increase in population during ritual or ceremonial events.

Click on the image for a better view.

Credits

Photo by Ed88, online courtesy Wikimedia Commons. 

This image is licensed under the Creative Commons Attribution ShareAlike 2.5 License. In short:  You are free to share and make derivative works of it provided that you appropriately attribute it, and that you distribute it only under a license identical to this one.