Chapter 10

The Ychsma (A.D. 900–1470) culture flourished along the central coast of Peru until they were absorbed by the Inca Empire in the late 15th century. Although little is known of the Ychsma, their occupation of the ceremonial site of Pachacamac is well-documented. The site of Pachacamac was an important oracle center for centuries with a vast complex of monumental buildings, including at least 18 pyramids. Although the Inca conquered the Ychsma, they still consulted the oracle and continued ceremonial activities at the site.