02/03/2007 07:12:00 PM
The Grand Canyon is the earth's most remarkable geological formation, but for some, just glimpsing over the edge into the abyss, isn't enough.

To make the most extreme, even extremer, a glass skywalk is being built that reaches out 75ft over the canyon and stands 4,000 ft above the river below.

This project is the brainchild of a Chinese businessman and the Hualapi tribe.

This is a film that details the construction process currently taking place.

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