1500 years ago the tsunami happened in Switzerland

Nearly 1,500 years ago, a rocky tsunami swept across Lake Geneva area with a 13m high "wall".

This is the conclusion made by a group of Swiss scientists in an article published in the journal Nature Geoscience on October 28.

A corner of Lake Geneva

The group of scientists led by Earth researcher Katrina Kremer at the University of Geneva, said they have studied the Tauredunum incident in 563 BC. An occasional record of a French bishop describing the "bewildering and terrifying" disaster : a giant wave crashed into the lake, destroying villages and herds, then overflowing through walls. Geneva city reached the westernmost city and engulfed many people.

Scientists think this is a tsunami on the lake. They gave evidence that part of the mountain had collapsed into the Rhone River, 5km from the lake where it poured into Lake Geneva.

Scientists swept the deepest part of the high-resolution radar pool and discovered a large oval-shaped sediment that is more than 10km long, 5km wide and 5m thick. The thickest point of the sediment in the Southeast shows that its base is in the "delta" area , where the Rhone River flows into Lake Geneva. According to scientists, it is likely that this sediment has been associated with mountain erosion and tsunami occurred in 563 BC.

Scientists emphasize that the results of the study show that in Geneva and Lausanne cities today there is still a risk of tsunamis, just like other cities located at the edge of mountain or bay lakes. narrow, high cliffs, and this risk has been underestimated because most people are completely unaware that tsunamis can occur in lakes.

Tsunamis are often associated with undersea earthquakes that occur near the coast, however, research from the 2004 Atlantic tsunami shows that large waves can be created in many cases, from mountains fire erupted until the dam broke.