The first settlers reached Peru some 20,000 years ago. They brought stone tools and were hunter-gatherers, living off game and fruit. Some of them settled in Paccaicasa, Ayacucho. The most ancient Peruvian skeletal remains found to date (7000 BC) show the ancient settlers had broad faces, pointed heads and stood 1.60 meters tall. The early Peruvians left examples of cave paintings at Toquepala (Tacna, 7600 BC) and houses in Chilca (Lima, 5800 BC).
The process of domesticating plants was to lay the foundations for organized agriculture and the construction of villages and ceremonial sites. As the regional cultures gradually integrated, new techniques surfaced such as textile weaving, metallurgy and jewelsmithy, giving rise to advanced cultures.