> ## Content Index
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# The Unbelievable Story of Earth’s Most Epic Flood
- URL: https://www.cascadepbs.org/show/its-okay-be-smart/episode/the-unbelievable-story-of-earths-most-epic-flood-fyxzsd/
- Published: 2024-04-02T23:16:50.000Z
- Updated: 2025-08-20T09:55:44.000Z
- Description: Let's learn the story of one of the worst natural disasters that’s ever happened!
- Author: Cascade PBS Staff
- Tags: Be Smart, Season 10, Episode 13, #ZZZ_Episode_c69085f6-bd90-42fb-ab85-6e7d0698463d, #episode, #ZZZ_Show_dc38a6e9-266e-43c1-b647-45e7445fad27, #v1.16

One day around 15,000 years ago, a wall of ice 2,000 feet tall and 30 miles wide suddenly broke wide open, and it unleashed the largest flood that we know of in the history of Earth. Come and hit the road with me as we search for the geologic fingerprints of the Missoula Ice Age Floods, and learn the story of one of the worst natural disasters that’s ever happened!