Fodor's Expert Review Lago Tres Chimbadas

This oxbow lake, a short hike from the Tambopata River, is a great place to see wildlife, including the endangered giant river otter. It is also home to side-necked turtles, hoatzins, sun grebes, jacanas, and dozens of other bird species. Its dark waters hold black caimans (reptiles that resemble small alligators) and a plethora of piranhas, so try to resist any urge you have to go for a swim. Most people visit Tres Chimbadas on an early morning excursion from the nearby Posada Amazonas.