A valley in southern Peru, north of the city of Ayacucho, with a series of caves - notably Pikimachay (Flea) Cave and Jayamachay (Pepper) Cave - which were the site of a complex of unifacial chipped tools (basalt and chert core tools, choppers, unifacial projectile points) and bone artifacts (horse, camel, giant sloth) dating between 15,000-11,000 BC. A human presence has been suggested in the Ayacucho Basin at that time, which would correspond with the first wave of immigrants to the New World. Succeeding levels contain burins blades fishtail points and manos and metates. Gourds squash cotton lucuma and seed plants such as quinoa and amaranth were cultivated in the Ayacucho Basin before 3000 BC; corn and beans within the next millennium. There were also ground stone implements for milling seeds. It has been claimed that llamas and guinea pigs were domesticated within the complex.