Cataract on the Potaro River, west-central Guyana.
After a sheer drop of 741 ft (226 m), the falls pass into a gorge 5 mi (8 km) long, which descends another 81 ft (25 m). The falls are 300 to 350 ft (90 to 105 m) wide at the top and are the central feature of Kaieteur National Park (1930).