Loren McIntyre's account of how in 1971, after years of searching, he discovered the source of the Amazon. Local rumour had it that only the Mayoruma tribe, deep in the Amazon interior, could lead McIntyre to his goal, and he claims that he communicated with tribe's headman by telepathy before reaching the river's source. The explorer's journals are interwoven with detailed narrative by Petru Popescu, author of "The Last Wave".