We present and model new radiocarbon data for the Neolithic marshes of Marais de Saint-Gond Marne in France. We then provide the first radiocarbon-based synthesis of human activity in this region. The earliest flint mine pits dug in France were dated to between 7518 and 7356 cal BC (95% probability) in the Mesolithic period. A Neolithic sequence of activity has been reconstructed in detail for the mine and hypogeums in the Vert-laGravelle ?La Craye`re? site. Using summed probability distribution frequencies with new radiocarbon results from flint mines, hypogeum-burials and settlements, we show the peak of regional population is consistent with the advent of the hypogeum construction during the Ne?olithique re?cent/Ne?olithique final between 3650 and 2900 cal BC (95% probability).