In 1560 an expedition of conquistadors led by Pedro de Ursua moves down to the Huallaga river to discover and seize the "Eldorado". Soon she has difficulty due to tumultous river rapids. This second expedition down Amazon will be marked by the mutiny sinister Aguirre. His letter to King Philip II of Spain traces the bloody wandering became legendary

Five hundred years later, the German filmmaker Werner Herzog settled on the banks of Huallage at Puma Rinri on the footsteps of Aguirre, to make the picture God's wrath

When low water come every year from June fish of all species that inhabit the Huallaga begin their spawning migration back into the river. It \'s "el Mijano."