Iguassu Falls
Iguassu Falls (; Spanish: Iguazú), a waterfall on the Argentina-Brazil border. It lies on the Iguassu River and consists of a spectacular series of several hundred cataracts, separated by rocks and tree-covered islands. The cataracts, many of them higher and wider than Niagara Falls, plunge as much as 237 feet (72 m) into a gorge called the Devil's Throat. Together they form a horseshoe some 21/2 miles (4 km) long. The vast hydroelectric power potential of the falls is undeveloped. National parks have been established here by both Argentina and Brazil.