Regular tsunamis are destructive, but mega tsunamis are on another level. Could one really reach skyscraper heights? How are they formed, and what would happen if the biggest one ever hit?

Hawaii has its own history of mega-tsunamis, most recently about 100,000 years ago. “One block of rock that slid off Oahu is the size of Manhattan,” wrote Becky Oskin in Live Science.

A mega tsunami taller than a 50-story skyscraper once engulfed an island off the west coast of Africa, ... generating a titanic wave 1,724 feet high (525 m), the largest ever recorded.

Researchers have unveiled the first direct evidence of these massive waves and linked them to bizarre seismic signals that baffled scientists.

The Tonga underwater volcanic eruption rivaled the strength of the largest U.S. nuclear bomb and produced a "mega-tsunami" nearly the height of a 30-story skyscraper, a recent study finds.

"The largest historic tsunami happened in 1958 when a landslide fell into a fjord in Lituya Bay in Alaska", ... That mega-tsunami claimed only five lives because of the remoteness of the area, ...

Unlike smaller tsunamis, which may only produce waves a few feet high, mega tsunamis are on a completely different scale. These waves can soar hundreds even up to 1,000 feet into the sky.

The largest wave in history: over 1,700 feet and a devastating megatsunami, ... These waves don’t travel far like traditional tsunamis; they hit hard, and close to home.

M<any enormous tsunami's like the one created when the big volcano on the island of Crete blew up around 1650 B.C. and caused 120 waves to hit most of what is present day Egypt, Palestine, Israel ...

A mega-tsunami caused by a landslide in Greenland caused the Earth to vibrate for nine days, a new study has shown. The collapse of a 1.2km-high (0.7 miles) mountain peak last September caused ...

A mega-tsunami caused by a landslide in Greenland caused the Earth to vibrate for nine days, a new study has shown. The collapse of a 1.2km-high (0.7 miles) mountain peak last September caused water ...