Eleven people were killed and 65 were missing after water burst into a turbine room at Russia’s biggest hydroelectric power station on Monday, in an accident that highlights the fragile state of Russia’s Soviet-era infrastructure. 

Officials said it could take “several years” and billions of roubles to repair damage at the Sayano-Shushenskaya plant after the accident destroyed one turbine, seriously damaged two and caused part of the plant’s structure to collapse.