1958 Alaskan Megatsunani, 524 m / 1,720 ft tall (Patreon)

In 1958, a section of cliff in Lituya Bay (Alaska) collapsed due to a nearby magnitude earthquake on July 9th. After 31 million cubic meters of rock slid into the bay, it triggered an even larger landslide at the adjacent glacier. This generated the world’s tallest ever tsunami which measured up to 524 m or 1,720 ft tall. If you view the area from satellite, you can still see the tree line which the tsunami went up to.