Nazca religious life had a geographic center distinct from where Nazca people actually lived. Cahuachi, a large complex of earthen mounds in the Nazca valley, functioned not as a permanent city but as a pilgrimage and ceremonial center, periodically enlarged and then, in a practice scholars find genuinely unusual, ritually buried, its structures deliberately covered over rather than left standing or abandoned to decay. Nazca ritual practice is also known for the deliberate preparation of trophy heads, human heads severed and reworked that appear repeatedly in Nazca art and in burials, evidence scholars connect to fertility, ancestor veneration or captive related ritual though their precise meaning remains debated rather than settled.
The Nazca culture itself did not survive to meet the Inca. It declined by around 800 CE, absorbed as the expanding Wari state moved into the region centuries before the Inca empire rose. The later Andean religious world of Quechua and Aymara speakers, with its own veneration of Pachamama and the mountain apus, is a separate and much later cultural layer built on ground the Nazca had already left.
Nazca art beyond the geoglyphs carried the same religious repertoire across other media, painted onto pottery and woven into textiles depicting figures such as a mythical killer whale and a spotted cat alongside human forms scholars read as objects of reverence rather than ordinary decoration.