A Pre-agricultural Occupation on the Central Coast of Peru

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Abstract
More than 50 campsites, quarries, and workshop sites belonging to the pre-agricultural stage have been explored at Ancón on the central coast of Peru. The sites are located in areas of extinct fog vegetation, which was exploited not only for its seeds and roots, but also for grazing animals. The sites are winter camps. Six different lithic industries have been identified and seriated in a tentative sequence which may reach back to the Pleistocene. The earliest industry almost entirely lacks projectile points and other fine stone work. The next two industries are characterized by their stemmed projectile points and distinctive scrapers, while the three latest assemblages have stemless points and lack scrapers. The pre-agricultural stage came to an end around 2500 or 2000 B.C. with the establishment of permanent villages near the shore as a result of the retreat of the fog vegetation and the enrichment of the sea.