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# Ice Age Mystery of Lake Lewis
- URL: https://www.cascadepbs.org/show/nick-rocks/episode/ice-age-mystery-of-lake-lewis-gawpxo/
- Published: 2024-03-30T00:45:29.000Z
- Updated: 2025-12-12T19:29:35.000Z
- Description: Where did Lake Lewis come from and where did it go?
- Author: Cascade PBS Staff
- Tags: Nick on the Rocks, Season 3, Episode 1, #ZZZ_Episode_53eef24b-7633-403e-8eec-392915794bfb, #episode, #ZZZ_Show_fb43f9d5-44f4-411a-854a-568025965642, #v1.16

Follow the trail that led geologists to find an ancient lake that submerged much of eastern Washington under 1200 feet of water in the Ice Age. Where did the lake come from and where did it go?