GREAT NATURE -- Seeking the Source: The Mighty Amazon

The Amazon is the second longest river in the world, and a lifeline to people and wildlife. Now a group of filmmakers are on a quest to find the source of this mighty river. On their journey, they see how cities survive six months of flooding... They meet the people who depend on the Amazons riches and see creatures that time forgot. They follow the twists and turns of this epic river... Risk rising waters and raging torrents... And tackle some of the world's tallest mountains, the Andes.