They show some of this footage at the Visitor Center.
The Birdseye expedition was the US Geological Survey's survey of the Colorado River and Grand Canyon. Their courage and pioneering spirit is part of what makes America great.
Here is the footage from their expedition.
The Birdseye expedition was the US Geological Survey's survey of the Colorado River and Grand Canyon. Their courage and pioneering spirit is part of what makes America great.
Here is the footage from their expedition.
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