The clay dating from the Jurassic period is pictured in the tunnel system of the Cigeo project, a nuclear...
The clay dating from the Jurassic period is pictured in the tunnel system of the Cigeo project, a nuclear laboratory and underground storage facility site operated by French National Agency for Radioactive Waste Management (Andra) in Bure, France April 8, 2019. REUTERS/Benoit Tessier