A true conservationist is a man who knows that the world is not given by his fathers, but borrowed from his children.
- John James Audubon
The Mayan ruins, largely abandoned by 1000 AD, were left to moulder under the engulfing jungle. Today, the descendants of these ancients remain on the move, the Usumacinta is their river of life.
A veteran river runner turns 70, and heads off into the Peruvian wilderness to raft the Rio Marañón, the headwaters of the Amazon. .