They Anchored in the Safest Harbor in Alaska. Then the Mountain Fell In

Three fishing boats anchored in Lituya Bay on July 9, 1958, because it was supposed to be one of the safest harbors on the Alaskan coast. Minutes later, an earthquake dropped a mountainside into the bay, and the water surged 1,720 feet up the opposite slope, more than three times the height of the Eiffel Tower. It remains the highest wave run-up ever recorded. Six people were in the bay that night. This is what happened to them. In this video, we break down what actually happened at Lituya Bay: What triggered the disaster — the earthquake and rockslide that struck without warning How a landslide into a narrow inlet became the tallest wave ever recorded The physics behind why this wasn't a tsunami in the way most people picture one What happened to the three boats and six people caught in the bay that night Why scientists still use Lituya Bay to model megatsunami risk around the world today SOURCES United States Geological Survey field investigation, led by geologist Don Miller Survivor accounts from Howard Ulrich and Bill and Vivian Swanson Peer-reviewed studies on landslide-generated impulse waves and trim-line analysis NOTE ON HISTORICAL DETAILS Some specific sequences of that night are known only through survivor testimony and could not be independently verified in every detail. Where accounts vary, this video reflects the most widely supported scientific reconstruction of events. If you found this useful, subscribe for more history and disaster deep-dives. #LituyaBay #Megatsunami #Alaska #NaturalDisaster #documentary #history #disaster #mega #tsunami #usa 0:00 – They anchored in the safest harbor in Alaska 0:49 – The geography of Lituya Bay 1:35 – Three boats anchored for the night 2:38 – 10:15 p.m.: the earthquake strikes 4:00 – The rockslide into Gilbert Inlet 5:07 – The physics: why this wasn't a typical tsunami 5:48 – The 1,720 ft run-up 6:30 – The wave reaches the boats 7:14 – The Badger is carried over the treetops 7:33 – The Swansons escape their sinking boat 7:52 – The lost boat and the only fatalities 8:06 – What a landslide-generated megatsunami really is 10:07 – Evidence of earlier megatsunamis in the bay 11:03 – The USGS investigation led by Don Miller 13:39 – Legacy: how Lituya Bay shapes global risk models 15:26 – The trim line still visible today 15:50 – Closing: the six people in the bay that night Sources: Lituya Bay – Wikipedia Anchorage Daily News – the Alaska earthquake that generated the largest tsunami in recorded history USGS – Lituya Bay, 1958