France: how was Notre-Dame’s stonework restored after the 2019 fire?

The centuries-old Paris landmark Notre-Dame Cathedral reopens on Saturday, five-and-a-half years after a devastating fire destroyed its spire and roof and brought the entire Gothic masterpiece within minutes of collapsing. For more information about the restoration, FRANCE 24’s Claire Paccalin interviews Clara Baier, site manager of the stone restoration team.