Grand CanyonStreaming Video - 2011
Immense tectonic forces. Millions of years of erosion. This program explains how the Grand Canyon - nearly 300 miles long, up to 18 miles wide, and more than a mile deep - came to be.
Publisher: New York, N.Y. : Films Media Group, , c2009
Characteristics: 1 streaming video file (45 min.) :,sd., col
Alternative Title: How the Earth was made (Television program)