Cahuachi, in Peru, was a major ceremonial center of the Nazca culture and overlooked some of the Nazca lines from 1 CE to about 500 CE. Italian archaeologist Giuseppe Orefici has been excavating the site for the past few decades, bringing a team down every year. The site contains over 40 mounds topped with adobe structures. It's also been studied by Helaine Silverman, who's written a book on Cahuachi. The permanent population was quite small, but it was apparently a pilgrimage center that grew… (More on Cahuachi)