Grand Canyon
- Episode aired Nov 24, 2009
- TV-PG
- 45m
The relatively tiny Colorado River had substantial help in carving out a chasm as wide and deep as the Grand Canyon. The story is so complex and the evidence so scarce that it took geologist... Read allThe relatively tiny Colorado River had substantial help in carving out a chasm as wide and deep as the Grand Canyon. The story is so complex and the evidence so scarce that it took geologist decades to unravel the mysteries.The relatively tiny Colorado River had substantial help in carving out a chasm as wide and deep as the Grand Canyon. The story is so complex and the evidence so scarce that it took geologist decades to unravel the mysteries.