Geological History of the Cascades | Pacific Northwest | Lindblad Expeditions-National Geographic

Glacial ice and basalt floods worked together over millions of years to create the unique landscapes of the Columbia River and Cascade Mountains. Video by James Biscardi aboard the National Geographic Sea Lion in The Dalles, Oregon. Learn more about our Pacific Northwest itineraries and special offers: http://bit.ly/LEX-pnw Subscribe to our channel: http://bit.ly/LEX_YouTube Join the conversation: Facebook: http://bit.ly/LEX_FB Instagram: http://bit.ly/LEX_Instagram Twitter: http://bit.ly/LEX_Twitter Blog: http://bit.ly/LEX_Blog

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