Note: Early agricultural settlement, 4000-1000 BCE; small pieces of copper & gold found here has pushed back the date of the earliest metalworking in the Andes to at least 1100 BCE; may also shed light on the metalwork of the Chavín & Moche cultures; excavations uncovered a flat-topped 72-ft-high pyramid & 2 lower platform mounds in a U-shape around a plaza; residential areas also excavated; located S of Lima.