Tsunamis are giant waves caused by earthquakes or volcanic eruptions under the sea or landslides. The tallest tsunami on record - about 1,700 feet (520 meters) - also was a localized event, occurring ...

A massive 'megatsunami' wave created when part of an Alaskan mountain crumbled into the sea is the second tallest ever recorded – and a reminder of the risks posed by melting glaciers, say scientists.

The recent landslide-generated tsunami in Tracy Inlet of Southeast Alaska recalls the granddaddy of them all: the giant wave that scarred Lituya Bay in 1958. Lituya Bay, on the Pacific coast about 100 ...

Aerial view of the August 2025 landslide and tsunami near South Sawyer Glacier in Alaska A massive 'megatsunami' wave created when part of an Alaskan mountain crumbled into the sea is the second ...

Add Yahoo as a preferred source to see more of our stories on Google. Aerial view of the August 2025 landslide and tsunami near South Sawyer Glacier in Alaska [Photo by Cyrus Read/U.S. Geological ...