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Great Natural Monuments - Grand Canyon show's poster

Great Natural Monuments - Grand Canyon

Passionate geologists Karl Karlstrom and Laura Crossey take a fascinating journey along the Colorado River to discover the natural monument that is still far from having revealed all its secrets. They cross the wildest rapids brought about by the clash between the Colorado River and the most ancient rocks of the Grand Canyon. And they solve the enigma of its formation, debated for 150 years.

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Episode #102

Season 1 Episode 102 | 52m 43s | CC

After four days of navigating the Grand Canyon, Karl and Laura arrive at the places that tell the story of the formation of the American continent and elucidate the incredible moment when the Earth was a giant snowball. They cross the wildest rapids brought about by the clash between the Colorado River and the ancient rocks of the Grand Canyon. And they solve the enigma of its formation.

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Distributed nationally by American Public Television