W. E. Hardenburg, The Putumayo, The Devil's Paradise… (1912)
“ Nature resists at every step. Hunger, thirst, fever, fatigue, and death await the explorer at times, in these profound, unconquerable forests. Peru has sent forth many expeditions thereto; brave Peruvians have given their lives in the conquest. The authorities at different points have frequently organised bands of explorers, and the Lima Geographical Society has done much valuable work in sending out persons to explore and map these difficult regions. Yet the possession of the Montaiia is a heritage of incalculable value to Peru. It is a region any nation might covet. ”
