On April 7, 1934, a landslide on the slope of the mountain Langhamaren with a volume of fell from a height of about into the Tafjorden in Norway, generating three megatsunamis, the last and largest of which reached a height of between on the opposite shore. Large waves struck Tafjord and Fjørå. The waves killed 23 people at Tafjord, where the last and largest wave was tall and struck at an estimated speed of , flooding the town for inland and killing 23 people. At Fjørå, waves reached , destroyed buildings, removed all soil, and killed 17 people. Damaging waves struck as far as away, and waves were detected at a distance of from the landslide. One survivor suffered serious injuries requiring hospitalization.