Jobst Grapow

The scientist Udo Gierer is on the trail of Theodor Koch-Grünberg, the famous Amazon researcher at the beginning of our century. While traveling on a river steamboat, he meets and becomes friends with 14 year old José Junior. He takes José with him on a flight over the rain forest and tells the boy about the importance of the Amazon as the lung of the world.

Italian film adaptation of H.P. Lovecraft's "The silver key"

The scientist Udo Gierer is on the trail of Theodor Koch-Grünberg, the famous Amazon researcher at the beginning of our century. While traveling on a river steamboat, he meets and becomes friends with 14 year old José Junior. He takes José with him on a flight over the rain forest and tells the boy about the importance of the Amazon as the lung of the world.