A Secret Waterfall
COCACHIMBA, Peru—In May 2005, a German economist named Stefan Ziemendorff went for a hike in the Utcabamba valley. He’d been working on a wastewater project in the Amazonas province of Northern Peru, and was taking a day off to hunt for one of the region’s abundant pre-Incan ruins. When he crossed into a blind ravine, though, he spied something unexpected: a towering, two-tiered cataract in the distance that hadn’t appeared on any map. It was already late in the day, so he noted the location and made plans to come back later for a closer look. The following March, Ziemendorff held a press conference to declare that he had returned to the site with measuring equipment and discovered the third-tallest waterfall in the world.