A system of 275 waterfalls stretching across 2.7 kilometers of the Iguazú River — wider than Niagara, taller than Victoria Falls at its highest point, featuring the Devil''s Throat where half the river''s total flow drops 82 meters in a single curtain.
Eleanor Roosevelt reportedly stood at the rim of Iguazu Falls and said, "Poor Niagara." The quote may be apocryphal. The sentiment is not.
The Iguazú River drains the tropical plateau of the Paraná basin. In normal flow, it carries some 1,750 cubic meters of water per second. At Iguazu Falls, the river encounters an ancient volcanic basalt escarpment and drops — not over a single clean edge, but across 2.7 kilometers of fractured cliff into a horseshoe canyon, in a system of 275 individual falls that form, merge, and separate depending on the season and the rainfall.
The Devil''s Throat — Garganta del Diablo — is the centerpiece. A U-shaped canyon 82 meters deep and 150 meters wide into which roughly half the river''s total flow pours simultaneously. The spray column rises 30 meters above the rim. In certain light conditions, a permanent double rainbow arcs above it. Standing at the viewing platform at the edge, you cannot hear speech above the roar. The mist soaks you in seconds.
Both Argentina and Brazil maintain national parks on their respective sides of the falls. The Argentine side allows closer access — walkways thread between the falls, placing visitors in the spray. The Brazilian side offers panoramic overview — the full sweep of the system visible at once. Most visitors see both.
The forest around the falls — humid Atlantic forest with jaguars, tapirs, and toucans — is as important as the falls themselves. The ecosystem exists because the falls create it: the mist, the humidity, the constant water, the protected status. The falls do not exist in isolation. They are the center of a living system that surrounds them.