Palaeoenvironments and prehistoric interactions in northern France from the Eemian Interglacial to the end of the Weichselian Middle Pleniglacial

International audience; The Upper Pleistocene in the north of France is characterised by discontinuous human presence, closely linked to climatic fluctuations. Human groups were mainly present during the Eemian interglacial and at the beginning of the Weichselian glacial period, as well as during the Late Glacial, in correlation with large mammal populations. Upper Pleistocene climatic fluctuations impacted on raw material access, which partly conditioned lithic productionmodalities. However, the influence of cultural traditions remains important, both for lithic production and subsistence strategies.