A huge tsunami hit a cliff in Tonga 7000 years ago and carried a 1200-tonne boulder 200 metres inland, making it the biggest ...

Tsunamis are giant waves caused by earthquakes or volcanic eruptions under the sea, and can also be triggered by large rock slides or meteorite impacts. The name tsunami is a Japanese word meaning ...

Lituya Bay's mega-tsunami was driven by a landslide. Earthquakes in this region can shake loose massive amounts of rock from steep cliffs, displacing water and creating enormous waves. The ...