Tunnel boring machine (TBM) Marina begins her journey from the Arrighi shaft in Vitry-sur-Seine towards Créteil l'Echat station for the Grand Paris Express Line 15 South.

Grand Paris Express project introduces four new lines (Lines 15, 16, 17 and 18) and also extends existing lines 11 and 14. In total, it adds 200 km of new track and 68 new stations.

https://www.newcivilengineer.com/latest/tbm-launches-for-grand-paris-express-metro-line-19-03-2020/