The project, carried out by CARENE, aims to create a topographical plan known as Referential to Very Great Scale (RTGE) in the 10 municipalities of the agglomeration territory. In particular, it aims to have a common plan fund for all actors in the public domain at Community level allowing the very precise localisation of the constituent elements. The expenditure relates to the acquisition and digitisation of data covering 1110 kilometres of territory. This project, which runs from 2016 to 2020, responds to mutualisation challenges and will provide a fine and reliable knowledge of the territory. The data will be available on the GEOPAL Geographic Information Sharing Platform, facilitated by the State and the Region of Pays de la Loire.