The Tauredunum event of 563 AD was a tsunami on Lake Geneva, triggered by a massive landslide, which caused widespread devastation and loss of life along the lakeshore. According to two contemporary chroniclers, the disaster was caused by the collapse of a mountainside at a place called Tauredunum at the eastern end of Lake Geneva. It caused a great wave to sweep the length of the lake, sweeping away villages on the shoreline and striking the city of Geneva with such force that it washed over the city walls and killed many of the inhabitants.