 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.A study published in October 2012 suggests that the Tauredunum landslide triggered the collapse of sediments that had accumulated at the point where the River Rhône flows into Lake Geneva.This caused a huge underwater mudslide that displaced several hundred million cubic metres of sediment, producing a tsunami up to high that reached Geneva within about 70 minutes.