
author
1886–1942
An American engineer turned eyewitness author, he is remembered for a powerful early exposé of the rubber-trade atrocities in the Putumayo. His writing helped bring international attention to abuse and exploitation in the Amazon.

by W. E. (Walter Ernest) Hardenburg
Walter Ernest Hardenburg was an American engineer and explorer who later became known for his writing about the Putumayo region of the Amazon. Sources on his author pages identify him as an American engineer, and historical summaries describe how he traveled into the region in 1907 during the rubber boom.
During that journey, Hardenburg was seized by men connected with Julio César Arana's interests and became an eyewitness to the brutal treatment of Indigenous people in the Putumayo. Accounts from historical reference sources say he later gave testimony about what he had seen and helped expose the crimes of the Peruvian Amazon Company.
He is best known for The Putumayo: The Devil's Paradise (1911), a work that drew on his experiences and on collected testimony. More than a travel narrative, the book stands as an early work of investigative reporting and a stark record of colonial violence in the Amazon.