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# Ancient Lakes at Potholes Coulee
- URL: https://www.cascadepbs.org/show/nick-rocks/episode/ancient-lakes-at-potholes-coulee-lnobqa/
- Published: 2024-12-18T18:00:54.000Z
- Updated: 2025-12-12T19:29:44.000Z
- Description: These canyons weren’t carved by rivers, and these lakes may not be so ancient after all.
- Author: Cascade PBS Staff
- Tags: Nick on the Rocks, Season 6, Episode 3, #ZZZ_Episode_6fc5b4c5-cafe-4a5d-86bc-b0c7fbaaa179, #episode, #ZZZ_Show_fb43f9d5-44f4-411a-854a-568025965642, #v1.16

Just north of the famous Gorge Amphitheatre are two enormous lake-filled canyons that appear to feed into the Columbia River. But the canyons of Potholes Coulee weren’t carved by rivers, and the lakes at the valley floor might not be so ancient after all.