For 10 points, name this first millennium CE Peruvian culture that gave way to the Incas and whose name survives in a South American tectonic plate.
Their settling pattern seems to have been marked on the southern end by the Acari Valley.  They survived the coastal desert by bringing in water through a large series of underground aqueducts.  Much of that water came from their namesake river, the south bank of which was the site of their capital, Cahuachi [KA-wa-chee].  They arose from the Paracas culture, and their chief contribution remains their immense and cryptic namesake "Lines," carved across numerous edifices.  For 10 points, name this first millennium CE Peruvian culture that gave way to the Incas and whose name survives in a South American tectonic plate.
Their settling pattern seems to have been marked on the southern end by the Acari Valley.  
Nazca