The structure of the Milky Way (MW) disc remains poorly constrained in spite of numerous studies. The challenge comes from the fact that we are inside the MW disc, which makes all structures overlap along the line of sight. It is then needed to disentangle those structures to get a clear view of our Galaxy. 3D extinction maps aim to characterize the distribution of dust within our Galaxy, as well as to provide information about the structure of the MW. Recent studies 1,2,3,4 usually provide detailed 3D extinction maps, but that only extend to a few kiloparsecs or that only covers the very local Galactic disc.