Lakeside site in central Chile with stone artifacts (unifacial tools, blades) of a Levallois-Mousterian type and bone tools in association have been found with mastodon, horse, and deer bones, c 9400 BC or older. The combination indicates a Paleoindian presence at an early date. Butchering scars on bone and other lithic evidence strongly suggest a switch to the Big Game Hunting Tradition.