On Friday August 28^th 2020, Eiffage Génie Civil Marine timely delivered its works for this exceptional project “Mareterra”: long towing and installation of 18 concrete caissons ( 30 x 30 m x 28 m) up to 12,000 tons  each and finally transport and installation of armour rock protection covering 82 500 m², with rock blocks up to 15 tons.