On 9 October 1963, half a century ago, a massive landslide fell into the artificial lake created by the Vajont dam. Three successive waves of water were generated, the last one worth 50 million cubic meters. The water hit the nearby town of Longarone and other villages, killing approximately two thousand people.
The artificial lake had been considered at risk for years, but the contractors and then the National Electric Administration downplayed the risks.
In 1969, three managers and technicians were found guilty of negligence and sentenced to jail terms. However, the Vajont tragedy is still considered an example of the inability of the Italian Civil Service to effectively check the operations of big and powerful enterprises.