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As he recreates a famous exploratory trip down the Colorado River, Dan Snow makes use of 19th-century surveying equipment as he records geological data and takes photographs with a period 3D camera as the original team did.
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Episode 2
Episode 2
As he recreates a famous exploratory trip down the Colorado River, Dan Snow makes use of 19th-century surveying equipment as he records geological data and takes photographs with a period 3D camera as the original team did.
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