International audienceSeveral lidar missions have been carried out in Lorrain since 2007, including the surveys of the Haye forest as well as surveys for rescue archaeology purposes encompassing the construction of the high-speed rail connection Paris-Strasbourg. Analyses of this microtopographic database covering some 240 km2 of woodlands have provided evidence of considerable remains of ancient field forms. These testify of earlier arable farming, which displayed large changes in the form of land tenure prior to the later return of the forest.Plusieurs levés lidar ont été réalisés en Lorraine depuis 2007, parmi lesquels celui au-dessus du massif forestier de Haye et celui réalisé dans le cadre d'une opération d'archéologie préventive avan...