(hills) into pyramid mounds for ceremonial and religious purposes. Excavations at Cahuachi have given archaeologists key insights into the culture. The material remains found at the site included large amounts of polychrome pottery, plain and fancy textiles, trace amounts of gold and spondylus shells, and an array of ritual paraphernalia. The remains of pottery found at Cahuachi led archaeologists to believe that the site was specifically non-urban and ceremonial in nature. The ratio of plain, utilitarian pottery to fine, polychrome pottery was 30% to 70%. If it was an urban center, the proportion of utilitarian ceramics would have probably been higher. Among the foodstuffs found were the Three Sisters: maize, squash, and beans; as well as peanuts, and some fish. Construction at Cahuachi ceased. It appears that Cahuachi was abandoned at the very end of Nazca 3/early Nazca 4. Although there are many possible reasons for the collapse of Cahuachi, most scholars believe that the cessation of ceremonial use of the site is associated with the pan-Andean drought. Later (post-Cahuachi) Nazca society was structured in a similar fashion as before, but there was less emphasis on constructing large architectural complexes such as those at Cahuachi. Religion Likely related to the arid and extreme nature of the environment, Nazca religious beliefs were based upon agriculture and fertility. Much of Nazca art depicts powerful nature gods, such as the killer whale, the harvesters, the mythical spotted cat, the serpentine creature and, the most prevalent of worshiped figures, the anthropomorphic mythical being. Much as in the contemporary Moche culture based in northwest Peru. Shamans apparently used hallucinogenic drugs, such as extractions from the San Pedro cactus, to induce visions. The use of such substances is also depicted in art found on pottery related to the Nazca. Religious events and ceremonies took place in Cahuachi. The people worshiped the nature gods to aid in the growth of agriculture. During this time, all members of the society in surrounding villages would migrate to the center and participate in feasting as well. Non-elites could obtain highly valued goods, such as fancy polychrome pottery, through feasting. In exchange, the elites could enhance their political power and status while co-opting the commoners into labor and construction of the site. Trophy heads The Nazca used decapitated heads, known as trophy heads, in various religious rituals and appear as a motif in ceramic iconography. Visual depictions of decapitations often associate