 The Sonora archaeological heritage has a huge time depth, as demonstrated by evidence left by groups that 13,000 years ago populated this region.Towards northern Sinaloa and the coastal plains of the Fuerte, Mayo and Yaqui rivers, to the foothills of the Sierra Madre Occidental, developed the Huatabampo tradition, formed by communities that farmed cotton, corn, beans and pumpkin, by taking advantage of a large variety of coastal resources.Towards the east is the “Serrana Tradición”, on which after 1,000 A.D., changes in housing types are seen, these are built on surface, with walls resting on stone foundations.