Several research projects have been carried out over the last ten years on the general theme of Mesolithic and Protohistoric deep pits - mainly Neolithic and Bronze Age. In the course of discussions and thanks to field discoveries, some milestones have been set, both from a methodological point of view and in terms of scientific achievements in typology and chronology. They do not, of course, exhaust the subject and many questions remain unanswered. What was missing, however, was a general and precise overview of the state of the data at the national level. This is the objective of the mapping project undertaken within Inrap in 2015 (Les systèmes de fosses profondes à la Pré- et Protohistoire: cartographie des fosses cylindriques et des Schlitzgruben à l'échelle nationale). This provides a precise map of all these types of remains, recognised and excavated by Inrap as part of its current activity. Due to the diachronic nature of the theme, it covers at least the three main periods from the Mesolithic to the end of the Bronze Age. Organised as a regional network, it also aims to enhance the value of these remains, which, taken in isolation, could not be enhanced.
This round table marks a stage in the project by reviewing the state of regional discoveries and the main lessons that can be drawn from this theme at the national level. At the end of the session, there will be a space for discussion in order to freely address all aspects of this theme that are not expressed in the various reports, and to bring out new issues.
Round table organised by Vincent Riquier and the members of the Deep Pits Investigation Network (research financed by Inrap).