摘要:The Sierra de Atapuerca sites offer a chronological sequence that allows the study of the evolution of technology during the Early and the Middle Pleistocene, at least at a local scale. Here we present updated information of the lithic assemblages recovered at the different levels of the sites of Sima del Elefante, Gran Dolina, Galería and Sima de los Huesos. Also, other archaeological and environmental data will be crossed with the technical features in order to understand the peopling that took place at Atapuerca during Pleistocene times. Comparing these assemblages allows determining which variables are present and absent of each site/level, and which may be significant to understand the technological evolution.