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![Video thumbnail: NOVA Time Travel in the Grand Canyon](jpg/q0treqt-asset-mezzanine-16x9-h62ulpy2ffe.jpg)
Time Travel in the Grand Canyon
What does this geological wonder reveal about North America’s deep history?
Time Travel in the Grand Canyon
Support for PBS.org provided by:
Providing Support for PBS.org
Time Travel in the Grand Canyon
What does this geological wonder reveal about North America’s deep history?
Support for PBS.org provided by: