In the evening of 1959 the residents of Fréjus, France, were devastated by a deluge of water flowing from the collapsed Malpasset Dam. By the following morning they would learn that the disaster had claimed the lives of over 400 of their neighbours. Today, the remains of the Malpasset Dam squat over the Reyran, both as a memorial to the disaster and as a sobering warning to keep the lessons alive. The Malpasset Dam is a classic case-study in engineering geology and was the subject of the honorary lecture given by Pierre Duffaut at the 2018 Annual Conference of the...

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